Unable to cast object of type 'System.EventArgs' to type 'System.Web.UI.WebControls.GridViewRowEventArgs'

hi this is really really bugging me please help.

I have a web appliction that uses a Master Page. On one of the content pages I am presenting a gridview control bound to a spreadsheet. The gridview is contained within an ajax update panel. I want to add attributes to the rows of the gridview control once databound (mouseover effect). However I am getting the following error:-

Unable to cast object of type 'System.EventArgs' to type 'System.Web.UI.WebControls.GridViewRowEventArgs'

Can anyone help please.

Here is the aspx code:-

 

<%@ Page Language="vb" AutoEventWireup="false" MasterPageFile="~/LACEXMASTER.Master" CodeBehind="wfTest.aspx.vb" Inherits="LACEXWEB.wfTest"

title="Untitled Page" %>

<asp:Content ID="Content1" ContentPlaceHolderID="head" runat="server">

</asp:Content>

<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">

<asp:ScriptManager ID="ScriptManager1" runat="server">

</asp:ScriptManager>

<asp:UpdatePanel ID="UpdatePanel1" runat="server">

<ContentTemplate>

<asp:GridView ID="xxx" runat="server" SkinID="StandardGrid" EnableViewState="true">

</asp:GridView>

</ContentTemplate>

</asp:UpdatePanel>

 

 

</asp:Content>

 

 

and here is the code behind:-

 

Imports LACEXWEB.SharedUtilities

Imports System.Data.OleDb

Partial Public Class wfTest

Inherits System.Web.UI.Page

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

Dim connString As String = SharedUtilities.DataConnectionString

Dim oledbConn As OleDbConnection = New OleDbConnection(connString)

Try

oledbConn.Open()

Dim cmd As OleDbCommand = New OleDbCommand("Select * FROM [Sheet1$]", oledbConn)Dim oleda As OleDbDataAdapter = New OleDbDataAdapter()

oleda.SelectCommand = cmd

Dim ds As DataSet = New DataSet()

oleda.Fill(ds, "LAC")Dim daTB As DataTable

daTB = ds.Tables(0)

xxx.DataSource = ds.Tables(0).DefaultView

xxx.DataBind()

 

Catch

Finally

oledbConn.Close()

End Try

 

End Sub

 

Public Sub xxx_DataBind(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs) Handles xxx.DataBound

If e.Row.RowType = DataControlRowType.DataRow Then

e.Row.Attributes("onmouseover") = "this.style.cursor='hand';this.style.textDecoration='underline';this.style.color='red';"

End If

End Sub

End Class

 

thanx .

0
CDonny
8/13/2008 10:24:05 AM
asp.net.getting-started 91979 articles. 4 followers. Follow

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I don't think GridViewRowEventArgs are passed in during DataBind, only EventArgs are. Change it from GridViewRowEventArgs to just EventArgs.

If you want to change column information when it is being created, try using the xxx_ItemCreated event instead.

James.


If this answered your question, please mark as an answer so others will know too.

http://wyerarch.blogspot.com
0
Wyerarch
8/13/2008 11:29:11 AM

Hi

Would this do?

Public Sub xxx_DataBind(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs) Handles xxx.RowDataBound

Regards

Steve

0
wisccal
8/13/2008 11:30:18 AM

Steve - worked perfectley - a really massive thank you.

 

0
CDonny
8/13/2008 11:36:50 AM
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