ASP.NET 2.0 - Handling events in custom control

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ASP.NET 2.0 | Question 155 of 159

Handling events in custom control

I have created a custom control to get the values and sum them, Here I am able to get display the controls but I am not able to add the values in the text box which means that I am not able to catch the event handling function how is it to be done and
my second question is when I press the sum button the values in the textbox gets erased should I need to set the viewstate property if so how should i do that?
below shown is my code
custom control.cs

Code: ( text )

[DefaultEvent("Click")]

public class WebCustomControl1 : WebControl

{
TextBox value1 = new TextBox();

TextBox value2 = new TextBox();

Label output = new Label();

Button sresult = new Button();
private string showresult;

protected override void CreateChildControls()

{

//base.CreateChildControls();

value1.TextMode = TextBoxMode.SingleLine;

Controls.Add(value1);

Controls.Add(new LiteralControl("
"));

value2.TextMode = TextBoxMode.SingleLine;

Controls.Add(value2);

Controls.Add(new LiteralControl("
"));

sresult.Text = "Show Result";

Controls.Add(sresult);

Controls.Add(new LiteralControl("
"));

Controls.Add(new LiteralControl("Â Â Result:Â "));

Controls.Add(output);

Controls.Add(new LiteralControl(""));

sresult.Click += new EventHandler(btnsumclicked);

}

public event EventHandler Click;

void btnsumclicked(object sender, EventArgs e)

{

int a = int.Parse(value1.Text) + int.Parse(value2.Text);

showresult = a.ToString();

}

protected virtual void onClick(EventArgs e)

{

if (Click != null)

{

Click(this, e);

}

}

}

In code behind i did not give any thing how should I handle the event in code behind

Total Answers and Comments: 1

Last Update: October 22, 2008 Asked by: raghulvarma

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