asp.net c#

Posted on 2007-10-19
Medium Priority
Last Modified: 2013-11-26
I have detailview in a page, and inside of detailview I create templateitem and add textbox and button there...How can I call the value from the textbox?

This is aspx c#
Question by:riskyricky1972
  • 4
LVL 16

Expert Comment

ID: 20112930
I'm guessing your trying to access the value from code behind?

If So you can use the helper function at the end of this post to get a reference to the control in the template, just call as follows: -

TextBox myTextBox = FindControl(DetailsView1,"textBoxId");

    /// <summary>
    /// Returns a control if one by that name exists in the hierarchy of the controls collection of the start control
    /// </summary>
    /// <param name="start"></param>
    /// <param name="id"></param>
    /// <returns></returns>
    public static Control FindControl(Control start, string id)
        Control foundControl;

        if (start != null)
            foundControl = start.FindControl(id);

            if (foundControl != null)
                return foundControl;

            foreach (Control c in start.Controls)
                foundControl = FindControl(c, id);
                if (foundControl != null)
                    return foundControl;
        return null;
LVL 14

Expert Comment

by:Jai S
ID: 20113574
easy way without looops...
when you ASPX page loads,...check the VIEW --> Source from your browser, see the name of the text box that you are adding...it will be norammly a appended string with your details view...just use the name as findControls(thename) which wil lretun the object to you, then box it to a text box like this

textbox txt = (textbox)Findcontrols(the contorlname);
pardon me for an syntax errors in the code
LVL 16

Expert Comment

ID: 20114197
The soluition suggested by the previous poster will probably fail for two reasons you may find that you cant actulally find the control, see quote from msdn site: -

"The FindControl method can be used to access a control whose ID is not available at design time. The method searches only the page's immediate, or top-level, container; it does not recursively search for controls in naming containers contained on the page. To access controls in a subordinate naming container, call the FindControl method of that container."

and the "Find control" command expects the server ID of the control not the Client ID as suggested.
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Author Comment

ID: 20128835
McExp: Can U help?
LVL 16

Expert Comment

ID: 20157593
Was my first solution not clear enough?

What sort of further guidance are you looking for?
LVL 16

Accepted Solution

McExp earned 1000 total points
ID: 20282865
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