CODEWITHSUNDEEP
c#winformsevent-handling
Nithesh Narayanan
Nithesh Narayanan

Reputation: 11755

Getting control name for an event

In my C# Windows Forms form I have some buttons which are dynamically generated. I assigned the following method on the click event. Is it possible to get the name of the button from which the event is triggered?

private void btnBrowsDoc_Click(object sender, EventArgs e)
{
    try
    {
        if (openFileDialog1.ShowDialog().Equals(DialogResult.OK))
        {
            gbxDocument.Controls["txtDocument" + count].Text =
                openFileDialog1.FileName;
        }
        else
        {
            return;
        }
    }
    catch (Exception ex)
    {
        //handle the exception
    }
}

Upvotes: 8

Views: 53934

Answers (2)

KV Prajapati
KV Prajapati

Reputation: 94635

The first argument of the event handler, "object sender", contains a reference of an object/control which raised/fired an event.

var button = sender as Button;

Upvotes: 5

digEmAll
digEmAll

Reputation: 57210

You can use the sender argument. That is the Control (the button in this case) that has raised the click event:

var button = (Button)sender;
button.Name ...

N.B.: In case you have subscribed other controls (e.g. panels, etc.) to the same event handler, you can check if the sender is a button using the asoperator:

var button = sender as Button;
if (button != null)
{
    button.Name ...
    ...
}

Upvotes: 45

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