[RESOLVED] How to pass value from Independent form to child form

Please help how could i pass the value from Independent form to a child form..

in my declaration from MDIParent form i declared child form as frmSMRP then in the frmSMRP i have declare one new form as form1

here is my code below.

declaring child form under MDIParent form

Code:

---

    Dim FrmSMRPOffline As New FrmSMRPOffline
      FrmSMRP = New FrmSMRPOffline
      FrmSMRP.MdiParent = Me
      FrmSMRP.Show()
      FrmSMRP.WindowState = FormWindowState.Maximized

---

Declaring independent form under child form

Code:

---

  Dim form1 As New FrmHistorydetails
        form1.Owner = mdiTSMobile
        form1.ShowDialog(Me)

---

i have tried passing the value under independent form but did not work

Code:

---

frmSMRP.myID.text = form1.myID.text

---

now, how could i pass the value from independent form into child form?
please help..

anybody know this issue please help?

The way I would do it is rather than use form1.showdialog I would create a public function in frmHistoryDetails which would return the value you want, ie

Code:

---

Class FrmHistoryDetails

    Private ReturnVal as String

    Public Function Start() as String

        Me.ShowDialog
        Start = ReturnVal

    End Function

    Private Sub btnOK_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnOK.click

        ReturnVal = myId.Text

    End Sub

End Class

---

Assuming that your OK button has its dialogresult set (otherwise just add me.close after the line setting the returnval). Then in your calling code :

Code:

---

        Dim form1 As New FrmHistorydetails
        form1.Owner = mdiTSMobile
        myID.text = form1.Start()

---

Where should i put this code?

Code:

---


Dim form1 As New FrmHistorydetails
        form1.Owner = mdiTSMobile
        myID.text = form1.Start()

---

Wherever you like.

It is a direct replacement for your original block (the 2nd in your example) which is almost identical, so I'd suggest putting it exactly where your current code is.

thanks for responce Keystone but sadly it did not work.. here i want to explain it more clear..

i have to transaction from specefic customer for example the image below..
based on the status i'm done bringing the item information from SMRPoffline (as child form) into frmhistory, now based on the transaction history of the customer i want to select the price based on it's history transaction. then how could i put it back the Price of the item from history into child form again without closing both form.

see the image below i have selected the price,



now what i want is "When i press the select price button from frmhistorydetails(Sales History details) the value of the price will be pass into the Price textback of the child form, this box beside the Red label with "History Price", in short i want to replace the 155628.66 with 40676.89 on the spot without closing both form.. please help

then, i need bring also some data from Child form into the frmhistorydetails i can't use the code below because if i used it it will not display those items.. thanks in advance hope this will be solve

Code:

---

Dim form1 As New FrmHistorydetails
        form1.Owner = mdiTSMobile
        myID.text = form1.Start()

---

OK - your problem then is in using ShowDialog - that means processing of your calling form is suspended until the user closes the new dialog.

You could amend the Start procedure to accept a reference to the control you want to update, and then within your new form when the relevant item changes then you can set the target control's value there, ie

Code:

---

Public Class FrmHistoryDetails

    Private BoxToUpdate as TextBox

    Public Sub Start(byref myTextBox as TextBox)

        BoxToUpdate = myTextBox

        Me.ShowDialog

    End Function

    Private Sub btnOK_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnOK.click

        BoxToUpdate.Text = myID.text

    End Sub

End Class

---

Edit - just seen your latest post - you can pass in whatever information you want by adding extra argumens to the Start procedure and passing the the values through.

there is an error line (Blue line) in the me.showDialog is say's" it not a member..

boxtoupdate means the box in the child? it did not work

by the way this is Visual studio 2005

So long as the class is a form, showdialog should work fine.

When you say "boxtoupdate means the box in the child? it did not work " what do you mean

BoxToUpdate should be the control on the calling form which you wish to update.

Are you saying it won't update?

EDIT - sorry, cut and paste error. In the btnOK_click function that should be BtnToUpdate.text = myID.text. I've amended the code above to correct it.

yes i did not update then i can't run because there is an erorr in me.showdialog it say's "Ot's not a member of the form frmhistorydetails

Can you post the exact code you have?

this is my code here

Code:

---

  Private BoxToUpdate As TextBox
    Public Sub Start(ByRef txtprice As TextBox)
        BoxToUpdate = txtprice
        Me.ShowDialog()
    End Sub

    Private Sub btnSeletecPrice_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSeletecPrice.Click
 txtPrice.Text = Me.BoxToUpdate.Text
    End Sub

---

may be because this is not assigned

Code:

---

Private BoxToUpdate As TextBox

---

Yes but where is that code? It should be within a form class. Is it?

If it is not within a form then ShowDialog will not work, if it is within a form it will.

BoxToUpdate is declared as a module-level variable, and its contents are assigned in the Start mehod.

yah i did this is the entire code, those in bold are your code that part only didnot work when i pass the value from this for into the child form..

that is the entire code i have and the textbox name of textbox in the child form is txtPassprice.text that is where i want to pass the value of the txtprice.text textbox

Code:

---

Public Class FrmHistorydetails

    Public HitemCode, Hcuscode As String

    Private Sub FrmHistorydetails_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        ' Me.txtCustCode.Text = Me.Hcuscode
        ' Me.txtItemCode.Text = Me.HitemCode

        ' MessageBox.Show(Hcuscode)
        ' MessageBox.Show(HitemCode)
        ' Me.txtItemCode.Text = FrmSMRP.MatNoComboBox.Text
        ' Me.txtCustCode.Text = FrmSMRP.CustNoComboBox.Text

        Me.DataGridView1.Columns(0).Visible = False
        Me.DataGridView1.Columns(1).Visible = False
        Me.DataGridView1.Columns(7).Visible = False
    End Sub

    Private Sub FrmHistorydetails_Shown(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Shown
        Try
            If Me.txtCustCode.Text <> "" Or Me.txtItemCode.Text <> "" Then
                Me.SalesHistoryTableAdapter.FillByCustItem(Me.SMRPSourceDataSet.SalesHistory, Me.txtCustCode.Text, Me.txtItemCode.Text)
                Me.DataGridView1.Columns(0).Visible = False
                Me.DataGridView1.Columns(1).Visible = False
                Me.DataGridView1.Columns(7).Visible = False
                Me.SalesHistoryTableAdapter.FillByCustItem(Me.SMRPSourceDataSet.SalesHistory, Me.txtCustCode.Text, Me.txtItemCode.Text)
                Me.DataGridView1.Columns(0).Visible = False
                Me.DataGridView1.Columns(1).Visible = False
                Me.DataGridView1.Columns(7).Visible = False
            Else
            End If
        Catch ex As Exception
            Me.Dispose()
        End Try
    End Sub

    Private Sub DataGridView1_CellClick(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles DataGridView1.CellClick
        If Me.DataGridView1.CurrentRow IsNot Nothing Then
            myrowindex = DataGridView1.CurrentRow.Index
            mycellinfo = DataGridView1.Item(6, myrowindex).Value.ToString
            Me.txtPrice.Text = mycellinfo
        End If

        Try
            If txtPrice.Text <> "" Then
                Dim dblTranspo As Double
                dblTranspo = txtPrice.Text
                txtPrice.Text = Format(dblTranspo, "#,##0.00")
                Me.txtPrice.Text = Me.txtPrice.Text
            End If
        Catch ex As Exception
            Me.txtPrice.Text = "Invalid multiplier"
            Exit Sub
        End Try

    End Sub

    Public myprice As String
    Private BoxToUpdate As TextBox
    Public Sub Start(ByRef txtprice As TextBox)
        BoxToUpdate = txtprice
        Me.ShowDialog()
    End Sub

    Private Sub btnSeletecPrice_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSeletecPrice.Click
        txtPrice.Text = Me.BoxToUpdate.Text
    End SubEnd Class

---

keystone_paul still not solve please help

Quote:

---

that part only didnot work when i pass the value from this for into the child form..

---

Can you clarify - you were saying you were getting an error with me.showdialog and the data not updating. Are you now saying that the me.showdialog bit is fixed?

yes the me.showdialog is now working...

the error now is under the click event, please see image below

You don't want "Me" there - just

txtPrice.Text = BoxToUpdate.Text

where should i put me? me.txtprice.text or me.BoxToUpdate.text?

Nowhere. Why do you want to put "me" there? It is not necessary. That said it shouldn't really cause a problem.

Can you show the code you are using to call the Start method? It sounds like there's a problem with the textbox you are passing in.

Here's my example I knocked up using two forms - frmMaster and frmDetail. frmMaster has a textbox to hold a value and a button to launch the detail form :

Code:

---

Public Class frmMaster

    Private Sub btnShow_Detail(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnShowDetail.Click

        Dim X As New frmDetail

        X.Start(txtMaster)

    End Sub

End Class

---

FrmDetail has a textbox and two buttons, clicking the btnUpdate button retrieves the value from the Master form and shows it in the textbox, the btnWriteBack button takes the text from the textbox (which the user could have edited) and writes it back to frmMaster's textbox :

Code:

---

Public Class frmDetail

    Dim MySource As TextBox

    Public Sub Start(ByRef Source As TextBox)

        MySource = Source
        Me.ShowDialog()

    End Sub

    Private Sub btnUpdate_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnUpdate.Click

        txtDetail.Text = MySource.Text

    End Sub

    Private Sub btnWriteback_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnWriteback.Click

        MySource.Text = txtDetail.Text

    End Sub

End Class

---

is the

Code:

---

frmmaster

---

is child form? because in my case it goes to 3 form before i can have the transaction to write back the data into child form... first when program run it will display first the 1.)MDIParent form 2.) Open child form. 3.) open an independent from the child form and do the transaction. now, my question is your frmmaster is Child form? maybe in your sample it's working but in me it did not because i has different form scenario.. thank you

by the way thanks keystone_Paul for your immediate responce
based on this code below how could i past the value in the also from child to independent form (FrmHistoryDetails) because when i open the FrmHistoryDetails form i have to pass also from child(frmSMRPOffline) form into indenpent form(FrmHistoryDetails) then based on the data displayed in FrmHistoryDetails i need to select one from it then send it back to child form (frmSMRPOffline), please take a look of the situation of yours and mine as kind of form (MDIParent, MDIChild form, Independent form)
thank you,

Code:

---

Public Class frmMaster

    Private Sub btnShow_Detail(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnShowDetail.Click
        Dim X As New frmDetail
        X.Start(txtMaster)
    End Sub
End Class

---

based on this code below, how to pass value from child to indenpendent form
i have to pass value textback value from child into independent form
1.) Item Code
2.) Item Description
based on this code

Code:

---

Dim X As New FrmHistorydetails
        X.Start(txtpassPrice)

---

i have tried it like these but it did not display value...

Code:

---

    Dim X As New FrmHistorydetails
        Me.ItemCodeComboBox.Text = X.txtItemCode.Text
        Me.ItemDescComboBox.Text = X.txtItemDesc.Text
me.cuscode.text = x.txtCusCode.text
        X.Start(txtpassPrice)

---

i need to pass those value beacause i need to filter thos item has been purchase by the customer previously, so that only data from select is displayed in the form..

I have try this code but it did not continue display the form window independent form. it's something like there is opening in the form but it disappear again..

Code:

---

Private Sub LinkSeedetails_DoubleClick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles LinkSeedetails.DoubleClick
        X.txtItemCode.Text = Me.ItemCodeComboBox.Text
        X.txtItemDesc.Text = Me.ItemDescComboBox.Text
        FrmHistorydetails.passItemCode = Me.ItemCodeComboBox.Text
        X.Start(txtpassPrice)
End Sub

---

nice code, i'm now done with my problem. this trade is solved already...
thanks you very much Keystone_paul for your help

here below is the original code

How i create / Show the MDIChild form from an MDIParent

Code:

---

  Dim FrmSMRPOffline As New FrmSMRPOffline
    Private Sub btnSMRPOffline_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSMRPOffline.Click
        Try
            If Me.Label11.Text = "" Then
                Me.Label11.Text = "1"
                FrmSMRPOffline = New FrmSMRPOffline
                FrmSMRPOffline.MdiParent = Me
                FrmSMRPOffline.Show()
                FrmSMRPOffline.WindowState = FormWindowState.Maximized
            Else
                FrmSMRPOffline.MdiParent = Me
                FrmSMRPOffline.Show()
                FrmSMRPOffline.WindowState = FormWindowState.Maximized
                FrmSMRPOffline.BringToFront()
            End If

        Catch ex As Exception
        End Try
    End Sub

---

This is MDIChild form and how i pass the value from MDIChild into the Independent form

Code:

---

Public Class SMRP
    Public X As New FrmHistorydetails
    Private Sub LinkSeedetails_DoubleClick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles LinkSeedetails.DoubleClick
        X.passcodecust = Me.CuscodeTextBox.Text
        X.passcustName = Me.CusnameComboBox.Text
        X.passitemDesc = Me.ItemDescComboBox.Text
        X.passItemCode = Me.ItemCodeComboBox.Text
        X.Start(txtpassPrice)
    End Sub

---

The entire code from FrmDetails to pass the value from Independent from to the MDIchild one

Code:

---

Public Class FrmHistorydetails

    Public passitemDesc As String
    Public passItemCode As String
    Public passcodecust As String
    Public passcustName As String
    Private Sub FrmHistorydetails_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Me.txtItemCode.Text = passItemCode
        Me.txtCustCode.Text = passcodecust
        Me.txtCustName.Text = passcustName
        Me.txtItemDesc.Text = passitemDesc
        Me.DataGridView1.Columns(0).Visible = False
        Me.DataGridView1.Columns(1).Visible = False
        Me.DataGridView1.Columns(7).Visible = False
    End Sub

    Private Sub FrmHistorydetails_Shown(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Shown
        Try
            If Me.txtCustCode.Text <> "" Or Me.txtItemCode.Text <> "" Then
                Me.SalesHistoryTableAdapter.FillByCustItem(Me.SMRPSourceDataSet.SalesHistory, Me.txtCustCode.Text, Me.txtItemCode.Text)
                Me.DataGridView1.Columns(0).Visible = False
                Me.DataGridView1.Columns(1).Visible = False
                Me.DataGridView1.Columns(7).Visible = False
                Me.SalesHistoryTableAdapter.FillByCustItem(Me.SMRPSourceDataSet.SalesHistory, Me.txtCustCode.Text, Me.txtItemCode.Text)
                Me.DataGridView1.Columns(0).Visible = False
                Me.DataGridView1.Columns(1).Visible = False
                Me.DataGridView1.Columns(7).Visible = False
            Else
            End If
        Catch ex As Exception
            Me.Dispose()
        End Try
    End Sub

    Private Sub DataGridView1_CellClick(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles DataGridView1.CellClick
        If Me.DataGridView1.CurrentRow IsNot Nothing Then
            myrowindex = DataGridView1.CurrentRow.Index
            mycellinfo = DataGridView1.Item(6, myrowindex).Value.ToString
            Me.txtPrice.Text = mycellinfo
        End If

        Try
            If txtPrice.Text <> "" Then
                Dim dblTranspo As Double
                dblTranspo = txtPrice.Text
                txtPrice.Text = Format(dblTranspo, "#,##0.00")
                Me.txtPrice.Text = Me.txtPrice.Text
            End If
        Catch ex As Exception
            Me.txtPrice.Text = "Invalid multiplier"
            Exit Sub
        End Try

    End Sub

    Public myprice As String
    Private BoxToUpdate As TextBox
    Public Sub Start(ByRef txtprice As TextBox)
        ' Me.Close()
        BoxToUpdate = txtprice
        Me.ShowDialog()
    End Sub
    Private Sub btnSeletecPrice_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSeletecPrice.Click
        BoxToUpdate.Text = Me.txtPrice.Text
    End Sub
End Class

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This code is work 100% please rate our post (me and keystone_paul) if it is usefull to you and others..

Hi i have question again, how about reverse... i wanted to pass value from child to independent form..?