cannot show error message

Valerie Meunier

In case of error, I want to show it. I tried two different ways, but none of the two works.

if i do string a = "ok", then both work. Strange, because ex.Message is a string.

Thanks

catch (SqlException ex)
{
string a = ex.Message;
ClientScript.RegisterStartupScript(this.GetType(), "", "alert('Error:' + '" + a + "');", true);
Response.Write("");
}

3 Replies

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Valerie Meunier4y ago
I tried, but nothing appears.
Rijwan Ansari4y ago
You can create general method for alter in code behind as shown:
public static void Show(string message)
{
    string cleanMessage = message.Replace("'", "\'");
    Page page = HttpContext.Current.CurrentHandler as Page;
    string script = string.Format("alert('{0}');", cleanMessage);
    if (page != null && !page.ClientScript.IsClientScriptBlockRegistered("alert"))
    {
        page.ClientScript.RegisterClientScriptBlock(page.GetType(), "alert", script, true);
    }
}
Then use in your exception as shown:
catch (SqlException ex)
                {
               Show(ex.Message);
                }
Sachin Singh4y ago
Test this
catch (SqlException ex)
                {
string msg="Error"+ ex.Message;
string script = string.Format("alert('{0}');", msg);
                ClientScript.RegisterStartupScript(this.GetType(), "",script, true);

                }