This causes two bindings in the collection to bind to the same property vb.net

Dear All Master,
I have a problem with binding. Please solution and I want expicturebox to appear if I click datagridview in cell ITC because if it immediately makes datagridview very slow.
Note : I use visual studio 2010

Code:

---

Public Class Form1
    Dim Path As String = Environment.GetFolderPath(Environment.SpecialFolder.Desktop)
    Dim cn = "provider=Microsoft.Jet.OLEDB.4.0; data source=" & Path & "; Extended Properties=dBase IV"
    Private WithEvents dt As New DataTable
    Dim Pathimage As String = "C:\Users\ADMIN2\Desktop\CATALOG"
Private Sub PopulateComboBox()
        Dim query As String = "SELECT DISTINCT SHI FROM IFG WHERE QOH > 0"
        Try
            Using con As OleDbConnection = New OleDbConnection(cn)
                Using sda As OleDbDataAdapter = New OleDbDataAdapter(query, con)
                    'Fill the DataTable with records from Table.
                    Dim dt As DataTable = New DataTable()
                    sda.Fill(dt)

                    'Insert the Default Item to DataTable.
                    Dim row As DataRow = dt.NewRow()

                    row(0) = ""
                    dt.Rows.InsertAt(row, 0)

                    'Assign DataTable as DataSource.
                    ComboBox1.DataSource = dt
                    ComboBox1.DisplayMember = "SHI"
                    ComboBox1.ValueMember = "SHI"
                End Using
            End Using
        Catch myerror As OleDbException
            MessageBox.Show("Error: " & myerror.Message)
        Finally

        End Try
    End Sub
 Private Sub DataGridView()

        Try
            dt = New DataTable
            Dim query = "select ITM,ITC,QOH,PRS,PRSOBBRT,PRSOBNET,FILENAME1,FILENAME2,FILENAME3,FILENAME4,FILENAME5,FILENAME6 FROM IFG WHERE QOH > 0 AND SHI = @SHI"
 Using con As OleDbConnection = New OleDbConnection(cn)
                Using cmd As OleDbCommand = New OleDbCommand(query, con)

                    cmd.Parameters.AddWithValue("@SHI", ComboBox1.SelectedValue)


                    Using adapter As New OleDbDataAdapter(cmd)
                        'Dim dt As DataTable = New DataTable()
                        adapter.Fill(dt)
                        'Me.DataGridView1.DataSource = dt

                    End Using
                End Using
            End Using
            Me.DataGridView1.DataSource = dt
            DataGridView1.RowHeadersWidth = 65
            DataGridView1.TopLeftHeaderCell.Value = "NO"
            DataGridView1.TopLeftHeaderCell.Style.Alignment = DataGridViewContentAlignment.MiddleCenter
 AddHandler Me.DataGridView1.RowPostPaint, AddressOf Me.dgvUserDetails_RowPostPaint
            For x As Integer = 6 To 11
                Me.DataGridView1.Columns(x).Visible = False
            Next
            ExPictureBox1.PrePath = Pathimage & "\"
            ExPictureBox2.PrePath = Pathimage & "\"
            ExPictureBox3.PrePath = Pathimage & "\"
            ExPictureBox4.PrePath = Pathimage & "\"
            ExPictureBox5.PrePath = Pathimage & "\"
            ExPictureBox6.PrePath = Pathimage & "\"

            ExPictureBox1.DataBindings.Add("FileName", dt, "FILENAME1") ' problem This causes two bindings in the collection to bind to the same property
            ExPictureBox2.DataBindings.Add("FileName", dt, "FILENAME2")
            ExPictureBox3.DataBindings.Add("FileName", dt, "FILENAME3")
            ExPictureBox4.DataBindings.Add("FileName", dt, "FILENAME4")
            ExPictureBox5.DataBindings.Add("FileName", dt, "FILENAME5")
            ExPictureBox6.DataBindings.Add("FileName", dt, "FILENAME6")
Catch myerror As OleDbException
            MessageBox.Show("Error: " & myerror.Message)
        Finally
            'cn.Dispose()
        End Try
    End Sub

---

Thanks
roy88

Looks like you're querying your database and setting your bindings on ComboBox1_SelectedIndexChanged. That would cause an error. You should be using the Master Details pattern, with ComboBox1 being Master and DataGridView1 being Details. You would only be querying your database once...

Quote:

---

Originally Posted by .paul.

Looks like you're querying your database and setting your bindings on ComboBox1_SelectedIndexChanged. That would cause an error. You should be using the Master Details pattern, with ComboBox1 being Master and DataGridView1 being Details. You would only be querying your database once...

---

Dear Mr. .paul. ,
Thanks for your reply. What is the code solution if I query only once according to your answer?
if I use the expicturebox binding to be very slow because the actual item is fifteen thousand maybe better expicturebox appears when clicking cell ITC column or there is another solution
Thanks
roy88

It's slow because you're querying every time you change your combobox item. Google Master Details

Quote:

---

Originally Posted by .paul.

It's slow because you're querying every time you change your combobox item. Google Master Details

---

dear sir,
Please guide me to create a detailed master as you conveyed.
So it doesn't become slow.
thanks
roy88

Try this...

Code:

---

Imports System.Data.OleDb

Public Class Form17
    Dim Path As String = Environment.GetFolderPath(Environment.SpecialFolder.Desktop)
    Dim cn = "provider=Microsoft.Jet.OLEDB.4.0; data source=" & Path & "; Extended Properties=dBase IV"
    Private WithEvents dt As New DataTable
    Dim Pathimage As String = "C:\Users\ADMIN2\Desktop\CATALOG"

    Private Sub DataGridView()

        Try
            dt = New DataTable
            Dim query = "select SHI,ITM,ITC,QOH,PRS,PRSOBBRT,PRSOBNET,FILENAME1,FILENAME2,FILENAME3,FILENAME4,FILENAME5,FILENAME6 FROM IFG WHERE QOH > 0"
            Using con As OleDbConnection = New OleDbConnection(cn)
                Using cmd As OleDbCommand = New OleDbCommand(query, con)

                    Using adapter As New OleDbDataAdapter(cmd)
                        'Dim dt As DataTable = New DataTable()
                        adapter.Fill(dt)
                        'Me.DataGridView1.DataSource = dt

                    End Using
                End Using
            End Using
            Me.DataGridView1.DataSource = dt
            DataGridView1.RowHeadersWidth = 65
            DataGridView1.TopLeftHeaderCell.Value = "NO"
            DataGridView1.TopLeftHeaderCell.Style.Alignment = DataGridViewContentAlignment.MiddleCenter
            AddHandler Me.DataGridView1.RowPostPaint, AddressOf Me.dgvUserDetails_RowPostPaint
            For x As Integer = 6 To 11
                Me.DataGridView1.Columns(x).Visible = False
            Next
            ExPictureBox1.PrePath = Pathimage & "\"
            ExPictureBox2.PrePath = Pathimage & "\"
            ExPictureBox3.PrePath = Pathimage & "\"
            ExPictureBox4.PrePath = Pathimage & "\"
            ExPictureBox5.PrePath = Pathimage & "\"
            ExPictureBox6.PrePath = Pathimage & "\"

            ExPictureBox1.DataBindings.Add("FileName", dt, "FILENAME1") ' problem This causes two bindings in the collection to bind to the same property
            ExPictureBox2.DataBindings.Add("FileName", dt, "FILENAME2")
            ExPictureBox3.DataBindings.Add("FileName", dt, "FILENAME3")
            ExPictureBox4.DataBindings.Add("FileName", dt, "FILENAME4")
            ExPictureBox5.DataBindings.Add("FileName", dt, "FILENAME5")
            ExPictureBox6.DataBindings.Add("FileName", dt, "FILENAME6")
        Catch myerror As OleDbException
            MessageBox.Show("Error: " & myerror.Message)
        Finally
            'cn.Dispose()
        End Try
    End Sub

    Private Sub Form17_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        DataGridView()
        Dim dtDistinct As DataTable = dt.DefaultView.ToTable(True, "SHI")

        'Insert the Default Item to DataTable.
        Dim row As DataRow = dtDistinct.NewRow()

        row(0) = ""
        dtDistinct.Rows.InsertAt(row, 0)

        'Assign DataTable as DataSource.
        ComboBox1.DataSource = dtDistinct
        ComboBox1.DisplayMember = "SHI"
        ComboBox1.ValueMember = "SHI"
    End Sub

End Class

---

Quote:

---

Originally Posted by .paul.

Try this...

Code:

---

Imports System.Data.OleDb

Public Class Form17
    Dim Path As String = Environment.GetFolderPath(Environment.SpecialFolder.Desktop)
    Dim cn = "provider=Microsoft.Jet.OLEDB.4.0; data source=" & Path & "; Extended Properties=dBase IV"
    Private WithEvents dt As New DataTable
    Dim Pathimage As String = "C:\Users\ADMIN2\Desktop\CATALOG"

    Private Sub DataGridView()

        Try
            dt = New DataTable
            Dim query = "select SHI,ITM,ITC,QOH,PRS,PRSOBBRT,PRSOBNET,FILENAME1,FILENAME2,FILENAME3,FILENAME4,FILENAME5,FILENAME6 FROM IFG WHERE QOH > 0"
            Using con As OleDbConnection = New OleDbConnection(cn)
                Using cmd As OleDbCommand = New OleDbCommand(query, con)

                    Using adapter As New OleDbDataAdapter(cmd)
                        'Dim dt As DataTable = New DataTable()
                        adapter.Fill(dt)
                        'Me.DataGridView1.DataSource = dt

                    End Using
                End Using
            End Using
            Me.DataGridView1.DataSource = dt
            DataGridView1.RowHeadersWidth = 65
            DataGridView1.TopLeftHeaderCell.Value = "NO"
            DataGridView1.TopLeftHeaderCell.Style.Alignment = DataGridViewContentAlignment.MiddleCenter
            AddHandler Me.DataGridView1.RowPostPaint, AddressOf Me.dgvUserDetails_RowPostPaint
            For x As Integer = 6 To 11
                Me.DataGridView1.Columns(x).Visible = False
            Next
            ExPictureBox1.PrePath = Pathimage & "\"
            ExPictureBox2.PrePath = Pathimage & "\"
            ExPictureBox3.PrePath = Pathimage & "\"
            ExPictureBox4.PrePath = Pathimage & "\"
            ExPictureBox5.PrePath = Pathimage & "\"
            ExPictureBox6.PrePath = Pathimage & "\"

            ExPictureBox1.DataBindings.Add("FileName", dt, "FILENAME1") ' problem This causes two bindings in the collection to bind to the same property
            ExPictureBox2.DataBindings.Add("FileName", dt, "FILENAME2")
            ExPictureBox3.DataBindings.Add("FileName", dt, "FILENAME3")
            ExPictureBox4.DataBindings.Add("FileName", dt, "FILENAME4")
            ExPictureBox5.DataBindings.Add("FileName", dt, "FILENAME5")
            ExPictureBox6.DataBindings.Add("FileName", dt, "FILENAME6")
        Catch myerror As OleDbException
            MessageBox.Show("Error: " & myerror.Message)
        Finally
            'cn.Dispose()
        End Try
    End Sub

    Private Sub Form17_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        DataGridView()
        Dim dtDistinct As DataTable = dt.DefaultView.ToTable(True, "SHI")

        'Insert the Default Item to DataTable.
        Dim row As DataRow = dtDistinct.NewRow()

        row(0) = ""
        dtDistinct.Rows.InsertAt(row, 0)

        'Assign DataTable as DataSource.
        ComboBox1.DataSource = dtDistinct
        ComboBox1.DisplayMember = "SHI"
        ComboBox1.ValueMember = "SHI"
    End Sub

End Class

---

---

Dear Mr. Paul,
Thanks for your reply. I tried to code from you no error.
for combobox even though it has appeared but can not do filters and I try still slow to move from row datagridview and also for search to be slow. If I do comment code below then it runs normally. is there a solution so that ExPictureBox.DataBindings does not make datagridview slow?

Code:

---

'ExPictureBox1.PrePath = Pathimage & "\"
            'ExPictureBox2.PrePath = Pathimage & "\"
            'ExPictureBox3.PrePath = Pathimage & "\"
            'ExPictureBox4.PrePath = Pathimage & "\"
            'ExPictureBox5.PrePath = Pathimage & "\"
            'ExPictureBox6.PrePath = Pathimage & "\"

            'ExPictureBox1.DataBindings.Add("FileName", dt, "FILENAME1")
            'ExPictureBox2.DataBindings.Add("FileName", dt, "FILENAME2")
            'ExPictureBox3.DataBindings.Add("FileName", dt, "FILENAME3")
            'ExPictureBox4.DataBindings.Add("FileName", dt, "FILENAME4")
            'ExPictureBox5.DataBindings.Add("FileName", dt, "FILENAME5")
            'ExPictureBox6.DataBindings.Add("FileName", dt, "FILENAME6")

---

This is the textbox code I use.

Code:

---

Private Sub TextBox1_TextChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles TextBox1.TextChanged
 Try
            CType(DataGridView1.DataSource, DataTable).DefaultView.RowFilter = String.Format("ITM LIKE '%{0}%' OR ITM LIKE '%{0}%'", TextBox1.Text)
Catch ex As Exception
            MsgBox("No match found")
        End Try
    End Sub

---

Code:

---

Imports System.Data.OleDb

Public Class Form17
    Dim Path As String = Environment.GetFolderPath(Environment.SpecialFolder.Desktop)
    Dim cn = "provider=Microsoft.Jet.OLEDB.4.0; data source=" & Path & "; Extended Properties=dBase IV"
    Private WithEvents dt As New DataTable
    Dim bs As BindingSource
    Dim Pathimage As String = "C:\Users\ADMIN2\Desktop\CATALOG"

    Private Sub DataGridView()

        Try
            dt = New DataTable
            Dim query = "select SHI,ITM,ITC,QOH,PRS,PRSOBBRT,PRSOBNET,FILENAME1,FILENAME2,FILENAME3,FILENAME4,FILENAME5,FILENAME6 FROM IFG WHERE QOH > 0"
            Using con As OleDbConnection = New OleDbConnection(cn)
                Using cmd As OleDbCommand = New OleDbCommand(query, con)

                    Using adapter As New OleDbDataAdapter(cmd)
                        'Dim dt As DataTable = New DataTable()
                        adapter.Fill(dt)
                        'Me.DataGridView1.DataSource = dt

                    End Using
                End Using
            End Using

            bs = New BindingSource
            bs.DataSource = dt
            Me.DataGridView1.DataSource = bs
            DataGridView1.RowHeadersWidth = 65
            DataGridView1.TopLeftHeaderCell.Value = "NO"
            DataGridView1.TopLeftHeaderCell.Style.Alignment = DataGridViewContentAlignment.MiddleCenter
            AddHandler Me.DataGridView1.RowPostPaint, AddressOf Me.dgvUserDetails_RowPostPaint
            For x As Integer = 6 To 11
                Me.DataGridView1.Columns(x).Visible = False
            Next
            ExPictureBox1.PrePath = Pathimage & "\"
            ExPictureBox2.PrePath = Pathimage & "\"
            ExPictureBox3.PrePath = Pathimage & "\"
            ExPictureBox4.PrePath = Pathimage & "\"
            ExPictureBox5.PrePath = Pathimage & "\"
            ExPictureBox6.PrePath = Pathimage & "\"

            ExPictureBox1.DataBindings.Add("FileName", bs, "FILENAME1") ' problem This causes two bindings in the collection to bind to the same property
            ExPictureBox2.DataBindings.Add("FileName", bs, "FILENAME2")
            ExPictureBox3.DataBindings.Add("FileName", bs, "FILENAME3")
            ExPictureBox4.DataBindings.Add("FileName", bs, "FILENAME4")
            ExPictureBox5.DataBindings.Add("FileName", bs, "FILENAME5")
            ExPictureBox6.DataBindings.Add("FileName", bs, "FILENAME6")
        Catch myerror As OleDbException
            MessageBox.Show("Error: " & myerror.Message)
        Finally
            'cn.Dispose()
        End Try
    End Sub

    Private Sub Form17_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        DataGridView()
        Dim dtDistinct As DataTable = dt.DefaultView.ToTable(True, "SHI")

        'Insert the Default Item to DataTable.
        Dim row As DataRow = dtDistinct.NewRow()

        row(0) = ""
        dtDistinct.Rows.InsertAt(row, 0)

        'Assign DataTable as DataSource.
        ComboBox1.DataSource = dtDistinct
        ComboBox1.DisplayMember = "SHI"
        ComboBox1.ValueMember = "SHI"
    End Sub

    Private Sub ComboBox1_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles ComboBox1.SelectedIndexChanged
        bs.Filter = "SHI = " & ComboBox1.Text
    End Sub

End Class

---

I'm not sure why the ExPictureBox loading is slowing your application, except you have 6 of these for which the filename must be found on each row change and also 6 images you're loading...

Quote:

---

Originally Posted by .paul.

Code:

---

Imports System.Data.OleDb

Public Class Form17
    Dim Path As String = Environment.GetFolderPath(Environment.SpecialFolder.Desktop)
    Dim cn = "provider=Microsoft.Jet.OLEDB.4.0; data source=" & Path & "; Extended Properties=dBase IV"
    Private WithEvents dt As New DataTable
    Dim bs As BindingSource
    Dim Pathimage As String = "C:\Users\ADMIN2\Desktop\CATALOG"

    Private Sub DataGridView()

        Try
            dt = New DataTable
            Dim query = "select SHI,ITM,ITC,QOH,PRS,PRSOBBRT,PRSOBNET,FILENAME1,FILENAME2,FILENAME3,FILENAME4,FILENAME5,FILENAME6 FROM IFG WHERE QOH > 0"
            Using con As OleDbConnection = New OleDbConnection(cn)
                Using cmd As OleDbCommand = New OleDbCommand(query, con)

                    Using adapter As New OleDbDataAdapter(cmd)
                        'Dim dt As DataTable = New DataTable()
                        adapter.Fill(dt)
                        'Me.DataGridView1.DataSource = dt

                    End Using
                End Using
            End Using

            bs = New BindingSource
            bs.DataSource = dt
            Me.DataGridView1.DataSource = bs
            DataGridView1.RowHeadersWidth = 65
            DataGridView1.TopLeftHeaderCell.Value = "NO"
            DataGridView1.TopLeftHeaderCell.Style.Alignment = DataGridViewContentAlignment.MiddleCenter
            AddHandler Me.DataGridView1.RowPostPaint, AddressOf Me.dgvUserDetails_RowPostPaint
            For x As Integer = 6 To 11
                Me.DataGridView1.Columns(x).Visible = False
            Next
            ExPictureBox1.PrePath = Pathimage & "\"
            ExPictureBox2.PrePath = Pathimage & "\"
            ExPictureBox3.PrePath = Pathimage & "\"
            ExPictureBox4.PrePath = Pathimage & "\"
            ExPictureBox5.PrePath = Pathimage & "\"
            ExPictureBox6.PrePath = Pathimage & "\"

            ExPictureBox1.DataBindings.Add("FileName", bs, "FILENAME1") ' problem This causes two bindings in the collection to bind to the same property
            ExPictureBox2.DataBindings.Add("FileName", bs, "FILENAME2")
            ExPictureBox3.DataBindings.Add("FileName", bs, "FILENAME3")
            ExPictureBox4.DataBindings.Add("FileName", bs, "FILENAME4")
            ExPictureBox5.DataBindings.Add("FileName", bs, "FILENAME5")
            ExPictureBox6.DataBindings.Add("FileName", bs, "FILENAME6")
        Catch myerror As OleDbException
            MessageBox.Show("Error: " & myerror.Message)
        Finally
            'cn.Dispose()
        End Try
    End Sub

    Private Sub Form17_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        DataGridView()
        Dim dtDistinct As DataTable = dt.DefaultView.ToTable(True, "SHI")

        'Insert the Default Item to DataTable.
        Dim row As DataRow = dtDistinct.NewRow()

        row(0) = ""
        dtDistinct.Rows.InsertAt(row, 0)

        'Assign DataTable as DataSource.
        ComboBox1.DataSource = dtDistinct
        ComboBox1.DisplayMember = "SHI"
        ComboBox1.ValueMember = "SHI"
    End Sub

    Private Sub ComboBox1_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles ComboBox1.SelectedIndexChanged
        bs.Filter = "SHI = " & ComboBox1.Text
    End Sub

End Class

---

---

Thanks for your reply. there is a warning "Cannot find column [System.Data.DataRowView]." in the code below

Code:

---

        bs.Filter = "SHI = " & ComboBox1.Text

---

Check the Select Statement I used. Ensure that yours is the same

Quote:

---

Originally Posted by .paul.

I'm not sure why the ExPictureBox loading is slowing your application, except you have 6 of these for which the filename must be found on each row change and also 6 images you're loading...

---

dear mr.Paul
so 6 filenames are not all contained so there are some full from filename1 to filename6 and there is also contains only filename1 and there is also contains filename1 &filename2. what makes it slow because it directly loading from datagridview?.

thanks
roy88

Quote:

---

Originally Posted by .paul.

Check the Select Statement I used. Ensure that yours is the same

---

Code:

---

Dim query = "select SHI,ITM,ITC,QOH,PRS,PRSOBBRT,PRSOBNET,FILENAME1,FILENAME2,FILENAME3,FILENAME4,FILENAME5,FILENAME6 FROM IFG WHERE QOH > 0"

---

It's the same as your sql statement.

The problem is that the code is attempting to set the filter before the BindingSource is initialised.

Code:

---

If bs Is Nothing Then Return
bs.Filter = "SHI = " & ComboBox1.Text

---

Quote:

---

Originally Posted by .paul.

The problem is that the code is attempting to set the filter before the BindingSource is initialised.

Code:

---

If bs Is Nothing Then Return
bs.Filter = "SHI = " & ComboBox1.Text

---

---

there is still a warning "Cannot find column [System.Data.DataRowView]."

Code:

---

Private Sub ComboBox1_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles ComboBox1.SelectedIndexChanged
    If bs Is Nothing Then Return
    Dim drv As DataRowView = DirectCast(ComboBox1.SelectedItem, DataRowView)
    If drv.Item("SHI").ToString = "" Then bs.Filter = "SHI = '%'": Return
    bs.Filter = "SHI = '" & drv.Item("SHI").ToString & "'"
End Sub

---

Quote:

---

Originally Posted by .paul.

Code:

---

Private Sub ComboBox1_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles ComboBox1.SelectedIndexChanged
    If bs Is Nothing Then Return
    Dim drv As DataRowView = DirectCast(ComboBox1.SelectedItem, DataRowView)
    If drv.Item("SHI").ToString = "" Then bs.Filter = "SHI = '%'": Return
    bs.Filter = "SHI = '" & drv.Item("SHI").ToString & "'"
End Sub

---

---

thanks for your reply. OK no problem

Quote:

---

Originally Posted by .paul.

Code:

---

Private Sub ComboBox1_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles ComboBox1.SelectedIndexChanged
    If bs Is Nothing Then Return
    Dim drv As DataRowView = DirectCast(ComboBox1.SelectedItem, DataRowView)
    If drv.Item("SHI").ToString = "" Then bs.Filter = "SHI = '%'": Return
    bs.Filter = "SHI = '" & drv.Item("SHI").ToString & "'"
End Sub

---

---

If I use this code the expicturebox appears only on the first line in the datagridview , I want the loading form to still appear in full datagridview

Quote:

---

Originally Posted by .paul.

I'm not sure why the ExPictureBox loading is slowing your application, except you have 6 of these for which the filename must be found on each row change and also 6 images you're loading...

---

I want the expicturebox to appear if I click a cell in the itc column so the process doesn't take long

or what makes it slow because in the database there is only filename so you have to search for it from the folder and its subfolders.

Quote:

---

Originally Posted by roy88

I want the expicturebox to appear if I click a cell in the itc column so the process doesn't take long

or what makes it slow because in the database there is only filename so you have to search for it from the folder and its subfolders.

---

That’s not the way databinding works. If you want to change your requirements, you have to use an appropriate dgv event to manually display your images…

Quote:

---

Originally Posted by .paul.

That’s not the way databinding works. If you want to change your requirements, you have to use an appropriate dgv event to manually display your images…

---

do you mean that in the database there must be a full path or location of the image?
so the solution for displaying images is good and fast because the database has fifteen thousand rows and the image filename has four thousand

If you click a row, your images will show. That is databinding. Obviously searching for files takes time.
If you want to change that so that images only show when you click a cell, that cannot be achieved through databinding.

Quote:

---

Originally Posted by roy88

If I use this code the expicturebox appears only on the first line in the datagridview , I want the loading form to still appear in full datagridview

---

if I use this code there is a problem so I can't use search in the textbox

Quote:

---

Originally Posted by .paul.

If you click a row, your images will show. That is databinding. Obviously searching for files takes time.
If you want to change that so that images only show when you click a cell, that cannot be achieved through databinding.

---

if I use the method below then it won't make it slow
"if you want to change that so that images only show when you click a cell, that cannot be achieved through databinding"

You’ve got me playing guessing games again. I’d recommend starting a new thread for this question, and good luck with that, I hope someone else can give you a useful answer…

Quote:

---

Originally Posted by .paul.

You’ve got me playing guessing games again. I’d recommend starting a new thread for this question, and good luck with that, I hope someone else can give you a useful answer…

---

ok for the problem of expicture or display images with different methods in datagridview then I will do a new post but I hope you can help me in my latest post

Quote:

---

Originally Posted by .paul.

Code:

---

Private Sub ComboBox1_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles ComboBox1.SelectedIndexChanged
    If bs Is Nothing Then Return
    Dim drv As DataRowView = DirectCast(ComboBox1.SelectedItem, DataRowView)
    If drv.Item("SHI").ToString = "" Then bs.Filter = "SHI = '%'": Return
    bs.Filter = "SHI = '" & drv.Item("SHI").ToString & "'"
End Sub

---

---

for now the problem for the combobox filter is not perfect because I can't use the search textbox every time I type a character it immediately appears "No match found" , and also I want the initial loading screen to appear full datagridview and another for the combobox filter column sequentially like A-Z

Code:

---


Private Sub TextBox1_TextChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles TextBox1.TextChanged
 Try
            CType(DataGridView1.DataSource, DataTable).DefaultView.RowFilter = String.Format("ITM LIKE '%{0}%' OR ITM LIKE '%{0}%'", TextBox1.Text)
Catch ex As Exception
            MsgBox("No match found")
        End Try
    End Sub

---