Using the id to find the control name by FindControl in asp.net

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I want to find the control by its id. I have a drop down list and i have its id also. I use its id to print the control name. But the code prints : Control not found.

This is the below code:

Control c = new Control();
Control fc = c.FindControl("ddl1");
if (fc != null)
{
Control c2 = fc.Parent;
Response.Write("parent of the textbox is :" + c2.ID);

}
else
{
Response.Write("control not found");

}

Posted 22-Jul-13 20:35pm

Rahul VB

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4 solutions

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Naz_Firdouse · Answer 1 · 2013-07-22T20:44:00

Solution 1

if you want to find a control within the same page, you can use like this

C#

Control fc = FindControl("ddl1");
if (fc != null)
{
Control c2 = fc.Parent;
Response.Write("parent of the textbox is :" + c2.ID);
 
}
else
{
Response.Write("control not found");
 
}

Posted 22-Jul-13 20:44pm

Naz_Firdouse

Hitesh Varde · Answer 2 · 2013-07-22T20:55:00

Hi,

you can get control this way.

private void Button1_Click(object sender, EventArgs MyEventArgs)
{
// Find control on page.
Control myControl1 = FindControl("TextBox2");
if(myControl1!=null)
{
// Get control's parent.
Control myControl2 = myControl1.Parent;
Response.Write("Parent of the text box is : " + myControl2.ID);
}
else
{
Response.Write("Control not found");
}
}

http://msdn.microsoft.com/en-us/library/system.web.ui.control.findcontrol(v=vs.71).aspx[^]

ErBhati · Answer 3 · 2013-07-22T21:10:00

Solution 3

private void btnsave_Click(object sender, EventArgs MyEventArgs)
{
Control myControl1 = FindControl("ddl1");
if(myControl1!=null)
{
Control myControl2 = myControl1.Parent;
Response.Write("Parent of the text box is : " + myControl2.ID);
}
else
{
Response.Write("Control not found");
}
}

Posted 22-Jul-13 21:10pm

ErBhati

Updated 22-Jul-13 21:11pm

v2

Gautam Raithatha · Answer 4 · 2013-07-22T21:19:00

Solution 4

Put the dropdown control inside a panel, say with ID "pnl".

XML

<asp:panel id="pnl" runat="server">
  <asp:DropDownList ID="ddl1" runat="server" />
</asp:panel>

Then use below code:

C#

Control ctrl = pnl.FindControl("ddl1");

Posted 22-Jul-13 21:19pm

Gautam Raithatha

Updated 22-Jul-13 21:20pm

v2