How to display label text when a dropdown list is selected..

[arunbojan]

Hi friends,

following is my code

 
//================
                    if (ddlColumnName.SelectedItem.Text == "call duration")
                    {
                        Label4.Text = "HH:MM:SS";
                    }
                    //=================
 
 

Im using c#, i have one dropdown list with n number of items. one amoung that item is call duration. If user select this option i have to display a label, say hh:mm:ss

can any one advice me the code and where exactly it should be placed.

Thanks in advance :)

[r035198x]

SelectedIndexChanged event for your dropdown.

[arunbojan]

yes i have placed under SelectedIndexChanged event but still label value is not displayed..... Anything wrong in my code ?

[r035198x]

yes i have placed under SelectedIndexChanged event but still label value is not displayed..... Anything wrong in my code ?

Post the full code you used.

[arunbojan]

Following is the code

 
private void ddlColumnName_SelectedIndexChanged(object sender, System.EventArgs e)
        {
                        if (ddlColumnName.SelectedItem.Text == "call duration")
            {
                Label4.Text = "HH:MM:SS";
            }
                                  }
 

[r035198x]

Following is the code

 
private void ddlColumnName_SelectedIndexChanged(object sender, System.EventArgs e)
        {
                        if (ddlColumnName.SelectedItem.Text == "call duration")
            {
                Label4.Text = "HH:MM:SS";
            }
                                  }
 

Output the SelectedItem's Text just to be what it's value actually is. Perhaps they have different case or are different strings altogether.

[Frinavale]

Following is the code

 
private void ddlColumnName_SelectedIndexChanged(object sender, System.EventArgs e)
        {
                        if (ddlColumnName.SelectedItem.Text == "call duration")
            {
                Label4.Text = "HH:MM:SS";
            }
                                  }
 

Just checking: you don't actually have Label4.Visible = false; anywhere do you? If so, you should set Label4.Visible = true; in your SelectedIndexChanged event.

-Frinny

[arunbojan]

Hi friends i resolved the problem.......

 
if (ddlColumnName.SelectedValue   == "File size")
            {
                                Label4.Text = "Bytes";
            }
 

instead of selected value i gave selected text........that was the problem.

Thank u......

[r035198x]

Hi friends i resolved the problem.......

 
if (ddlColumnName.SelectedValue   == "File size")
            {
                                Label4.Text = "Bytes";
            }
 

instead of selected value i gave selected text........that was the problem.

Thank u......

If you had output those values as I suggested above you would have picked that up earlier.

[tlhintoq]

I think you will find it a good practice to take text values you are comparing and drop them both to the same case, just to be safe, since comparrisons are case-sensative.

Most of mine look like this, keeping the code readible to the coder at the cost of reducing to the smallest number of bytes...

if (MyTextBox.Text.ToLower() == "What I Expect".ToLower() )
{
// Then do something here
}

This has saved me more than once from my own typos of 'expect' rather than 'Expect' and so on.