controls and tablerows on the fly 2

[henslecd]

Is there any way to create tablerows based on the value of a dropdownlist?

I.e dropdown contains values 1 through 10.

User selects 5. 5 Tablerows are created.

I was thinking something along the lines of
i=dropdown.selectedvalue
so i=5...

For x = 1 to i
<TR>
<TD>
<asp:dropdownlist id=dd<%=x%></asp:dropdownlist>.
<asp:textbox id=Textbox1<%=x%> runat=server></asp:textbox>.
<asp:textbox id=Textbox2<%=x%> runat=server></asp:textbox>.
<asp:textbox id=Textbox3<%=x%> runat=server></asp:textbox>.
<asp:textbox id=Textbox4<%=x%> runat=server></asp:textbox>
</TD>
</TR>

That is the way I did it in asp but it craps out on the <%%>.
Is there a way to create the controls dynamically, giving them ids?

Another issue is the placement on the page. I tried writing it out to a label to make it

appear where I want instead of the top of the page. That worked fine but I couldn't get

dropdowns created.

Thanks for the help

 

[Isadore]

Hen: You're probably going to have to create the textboxes in code behind and not loope through the HTML -- Until someone adds a little more light, check out LV's (C#) solution to creating a Textbox dynamically, and see if this approach is not scalable.

thread855-754338

 

[BoulderBum]

This should help.

<table id="myTable" runat="server">
   <tr>
     <td>My Table</td>
   </tr>
</table>

...

In code-behind:

private void myDropDown_SelectedIndexChanged(object sender, System.EventArgs e)
{
	HtmlTableRow tr;
	HtmlTableCell tc;
	TextBox txt;

	int rows = 
		Convert.ToInt32( myDropDown.SelectedValue );

	for( int i = 0; i < rows; i++ )
	{
		tr = new HtmlTableRow();
		tc = new HtmlTableCell();
		txt = new TextBox();

		tc.Controls.Add( txt );
		tr.Cells.Add( tc );
		myTable.Rows.Add( tr );
	}
}

If you want to get the values from the controls, you just need to re-create them on PostBack, then treat them in code as any typical control.

Let me know if you'd like more info.

 

[Isadore]

Thanks Boulder, nice code --

 

[BoulderBum]

Thanks, Isadore.

I just had to do something like this for work so it's fresh in my brain.

 

[henslecd]

Beautiful...Thanks Boulder

 

[henslecd]

Oh here is the vb version...


If (True) Then
Dim tr As HtmlTableRow
Dim tc As HtmlTableCell
Dim txt As TextBox

Dim rows As Integer = Convert.ToInt32(myDropDown.SelectedValue)

Dim i As Integer
For i = 0 To rows - 1
tr = New HtmlTableRow()
tc = New HtmlTableCell()
txt = New TextBox()

tc.Controls.Add(txt)
tr.Cells.Add(tc)
myTable.Rows.Add(tr)
Next i
End If

 

[BoulderBum]

No problem.

 

[henslecd]

Boulder,

I posted this thread.

http://www.tek-tips.com/viewthread.cfm?SQID=821168&SPID=855&newpid=855&page=1

Thanks for any help you can provide. I am a little confused about creating them on the postback.