[RESOLVED] [02/03] Click Events Problem (Very Easy)

[tommygrayson]

Hi Guys!!!

How do I know which button fired the event button.

Let's say I have:

Button1
Button2
Button3

Their click events calls the TestClick Procedure.

How do I know if Button1 Called TestClick Procedure.

Thanks in advance.

[tommygrayson]

Nobody!!!!

[tommygrayson]

Is there a property like IsClicked or something that gets the control that is clicked?

[Fishcake]

So you have 3 buttons that all call the same function and you want to know which button was clicked?

You can use the buttons CommandArgument attributes and then check this value to work out which button was clicked.

Private Sub Button_Command(ByVal sender As System.Object, ByVal e As CommandEventArgs)
        Dim test As String = e.CommandArgument()
    End Sub

[tommygrayson]

So you have 3 buttons that all call the same function and you want to know which button was clicked?

You can use the buttons CommandArgument attributes and then check this value to work out which button was clicked.

Private Sub Button_Command(ByVal sender As System.Object, ByVal e As CommandEventArgs)
        Dim test As String = e.CommandArgument()
    End Sub

Hmm... there is no CommandArgument in a LinkButton Control.

What the equivalent of CommandArgument in a LinkButton?

[Fishcake]

All buttons (link button, image button etc....) have a CommandArgument.

Try copying and pasting this...

<asp:LinkButton ID="btnLink" OnCommand="Command_Test" CommandArgument="1" Runat="server" text="Link Button"></asp:LinkButton>

Public Sub Command_Test(ByVal sender As System.Object, ByVal e As CommandEventArgs)
        Dim Test As String = e.CommandArgument
    End Sub

[Shuja Ali]

Can you post the code what you have done so far?

[tommygrayson]

So far, I have this.

Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        'Put user code to initialize the page here
        Dim c As New TextBox
        Automaton.CreateTable(Table1, 5, 5)
        Table1.Rows(0).Cells(0).Controls.Add(a)
        Table1.Rows(1).Cells(0).Controls.Add(b)
        Table1.Rows(0).Cells(1).Controls.Add(c)
        ViewState.Add("Test", c.Text)
        c.Text = viewstate.Item("Test")
        a.Text = "Test Link"
        b.Text = "B Link"
        a.CommandArgument = "1"
    End Sub
 
    Public Sub Test(ByVal sender As System.Object, ByVal e As CommandEventArgs)
        Dim d As String
        d = e.CommandArgument
        Response.Write("Yes!!!")
    End Sub

[tommygrayson]

All buttons (link button, image button etc....) have a CommandArgument.

Try copying and pasting this...

<asp:LinkButton ID="btnLink" OnCommand="Command_Test" CommandArgument="1" Runat="server" text="Link Button"></asp:LinkButton>

Public Sub Command_Test(ByVal sender As System.Object, ByVal e As CommandEventArgs)
        Dim Test As String = e.CommandArgument
    End Sub

Hmmm....

How do you call OnCommand in code?

Or how do you get "Command_Test" in code?

[Fishcake]

a.Command += New CommandEventHandler(test)

[tommygrayson]

a.Command += New CommandEventHandler(test)

I don't have withevents declared and I can't use withevents.

I get an error message that I can't directly call a.Command

[Fishcake]

Sorry, I've been working in C# and converting it from memory (although looking back I'm not sure why I thought you were using vb in the first place).

Here's what i do in C#

    protected void Page_Load(object sender, EventArgs e)
    {
        LinkButton a = new LinkButton();
        a.Command += new CommandEventHandler(TestCommand);
        a.Text = "Click Me";
        this.plhTest.Controls.Add(a);
    }

    private void TestCommand(object sender, CommandEventArgs e)
    {
        this.lbltest.Text = "Test";
    }

I can't remember how to add event handlers in vb.net....something to do with AddressOf?

[tommygrayson]

Sorry, I've been working in C# and converting it from memory (although looking back I'm not sure why I thought you were using vb in the first place).

Here's what i do in C#

    protected void Page_Load(object sender, EventArgs e)
    {
        LinkButton a = new LinkButton();
        a.Command += new CommandEventHandler(TestCommand);
        a.Text = "Click Me";
        this.plhTest.Controls.Add(a);
    }

    private void TestCommand(object sender, CommandEventArgs e)
    {
        this.lbltest.Text = "Test";
    }

I can't remember how to add event handlers in vb.net....something to do with AddressOf?

OH MY GOD!!!!!!!!!! THANK YOU THANK YOU THANK YOU!!!

I've been searching the whole day for this kind of solution.

I'M NOT WORTHY!!!!!!

[Fishcake]

You're welcome. A response like that makes it all seem worthwhile