errors with static method

Question

Hi,

this code for catching sql general errors in a website project works good.

protected void GridView1_RowUpdated(object sender, GridViewUpdatedEventArgs e)
{
if (e.Exception == null)
{
ClientScript.RegisterClientScriptBlock(this.GetType(), "", "alert('ok');", true);
}
else
{
ClientScript.RegisterClientScriptBlock(this.GetType(), "", "alert('Error!');", true);
e.ExceptionHandled = true;
}

Now, I want to put this code in a static method (in App_Code) in order to reuse it on several places in my project. But i get two errors:

using System;
using System.Web;
public class Class1
{
public static void Check()
{
if (e.Exception == null)
{

ClientScript.RegisterClientScriptBlock(this.GetType(), "", "alert('ok');", true);
}
else
{
   ClientScript.RegisterClientScriptBlock(this.GetType(), "", "alert('Error!');", true);

e.ExceptionHandled = true;
}
}
}

The first error is: 'e' doesn't exist in current context.

The 2nd error: 'ClientScript doesn't exist in current context (i also tried with Page.ClientScript.RegisterClientScriptBlock(this.GetType(), "", "alert('ok');", true), same error: 'Page' doesn't exist ...

Thanks for help.

V

Sachin Singh · Answer

sorry for the late reply, you can use this Note:- you can simplify it further using delegates, let me know if you need a more generic solution. public partial class ScriptHandler { private Page _page; public ScriptHandler(Page myPage) { _page = myPage; } public void ShowDialog(bool isError) { if (!isError){ ScriptManager.RegisterClientScriptBlock(page, this .GetType(), "" , "alert('ok');" , true ); } else { ScriptManager.RegisterClientScriptBlock(page, this .GetType(), "" , "alert('error');" , true ); } } } now, in the UI layer, you can invoke it as protected void GridView1_RowUpdated(object sender, GridViewUpdatedEventArgs e) { bool isError= e.Exception==null? true : false ; ScriptHandler obj= new ScriptHandler( this .Page); obj.ShowDialog(isError); }

Valerie Meunier · Answer

I tried this:in the partial class Public Exception e { Get; set}; And this in the invoking page: obj.e()=true; Non invocable member ‘ScriptHandler.e’ cannot be used like a method.

Valerie Meunier · Answer

How do i set the propety ExceptionHandled?

Sachin Singh · Answer

what if you set the ExceptionHandled property, put a debugger on ShowDialog(), and check the flow went there or not. protected void GridView1_RowUpdated(object sender, GridViewUpdatedEventArgs e) { bool isError= e.Exception==null? true : false ; ScriptHandler obj= new ScriptHandler( this .Page); obj.ShowDialog(isError); e.ExceptionHandled= true ; }

Valerie Meunier · Answer

Thanks but i still get the ugly aspx message and not ‘ok’ or ‘error’. I also had to change ‘page’ by ‘_page’ in the line with ScriptManager.RegisterClientScriptBlock(…) otherwise i get the error ‘the name ‘page’ does not exist in the current context.

Valerie Meunier · Answer

Hello, can you answer me, please? Giving an answer with errors doesn't help me at all. Thanks.

Valerie Meunier · Answer

Thanks for replying, but did you test your code, because i still have two (other) errors and i had to add using System.Web.UI; in order to avoid another error on line 7. 1) a object reference is required for the non-static field, method or property 'PageClientScript'. (line 11) 2) EventArgs does not contain a definition for 'ExceptionHandled' and no accessible method 'ExceptionHandled' could be found ..(line 17). And i guess i invoke the method by Class1.Check(e)? Thanks

Sachin Singh · Answer

using System;
using System.Web;
public class Class1
{
public static void Check()
{
if (e.Exception == null)
{

ClientScript.RegisterClientScriptBlock(this.GetType(), "", "alert('ok');", true);
}
else
{
   ClientScript.RegisterClientScriptBlock(this.GetType(), "", "alert('Error!');", true);

e.ExceptionHandled = true;
}
}
}