Default Value in Textbox 1

[net123]

I have a bunch of textboxes that the user is suppose to enter integer values into them. How can I set the default to zero (0)?

Reason being, I am getting the following error if the user does not enter anything in that box:


Input string was not in a correct format.

Stack Trace

[FormatException: Input string was not in a correct format.]
Microsoft.VisualBasic.CompilerServices.DoubleType.Parse(String Value, NumberFormatInfo NumberFormat)
Microsoft.VisualBasic.CompilerServices.DoubleType.Parse(String Value)
Microsoft.VisualBasic.CompilerServices.IntegerType.FromString(String Value)

[InvalidCastException: Cast from string "" to type 'Integer' is not valid.]
Microsoft.VisualBasic.CompilerServices.IntegerType.FromString(String Value)
ASP.Metrics_aspx.ImageButton_Click(Object sender, ImageClickEventArgs e) in c:\inetpub\

http://wwwroot\X\Metrics.aspx:126

System.Web.UI.WebControls.ImageButton.OnClick(ImageClickEventArgs e)
System.Web.UI.WebControls.ImageButton.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument)
System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument)
System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData)
System.Web.UI.Page.ProcessRequestMain()
[/red]

 

[Custom24]

Set the text property to "0" at design time and/or use a required field and regular expression validator

Mark