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Asp.net c# Grid view update Error

Every attempt to use the onrowupdating function a System.NullReferenceException error is thrown. The Gridview has no problem binding on page load and I can also delete rows without a problem.Here is my code:
Aspx..
<asp:GridView ID="datagrid" runat="server" DataKeyNames="Emp_ID" CssClass="EmployeeGridView" EditRowStyle-CssClass="GridViewEditRow" PagerStyle-CssClass="pager" HeaderStyle-CssClass="header" RowStyle-CssClass="rows"
AutoGenerateColumns="false" AllowPaging="true" OnRowCancelingEdit="OnRowCancelingEdit" OnRowDeleting="OnRowDeleting"
OnRowEditing="OnRowEditing" OnRowUpdating="OnRowUpdating"
OnPageIndexChanging="OnPageIndexChanging" PageSize="10"
>
<Columns>
<asp:BoundField ItemStyle-Width="150px" DataField="Emp_ID" HeaderText="Employee ID" />
<asp:BoundField ItemStyle-Width="150px" DataField="FName" HeaderText="First Name" />
<asp:BoundField ItemStyle-Width="150px" DataField="LName" HeaderText="Last Name" />
<asp:BoundField ItemStyle-Width="150px" DataField="Email" HeaderText="Email" />
<asp:BoundField ItemStyle-Width="100px" DataField="DOB" HeaderText="DOB" />
<asp:BoundField ItemStyle-Width="150px" DataField="EmpRole" HeaderText="Role" />
<asp:BoundField ItemStyle-Width="150px" DataField="Notes" HeaderText="Notes" />
<asp:CommandField ShowEditButton="true" />
<asp:CommandField ShowDeleteButton="true" />
</Columns>
</asp:GridView>
c#..
protected void OnRowUpdating(object sender, GridViewUpdateEventArgs e)
{
GridViewRow row = datagrid.Rows[e.RowIndex];
int Emp_ID = Convert.ToInt32(datagrid.DataKeys[e.RowIndex].Values[0]);
string FName = (row.Cells[2].Controls[0] as TextBox).Text;
string LName = (row.Cells[3].Controls[0] as TextBox).Text;
string Email = (row.Cells[4].Controls[0] as TextBox).Text;
string DOB = (row.Cells[5].Controls[0] as TextBox).Text;
string role = (row.Cells[6].Controls[0] as TextBox).Text;
string notes = (row.Cells[7].Controls[0] as TextBox).Text;
string constr = ConfigurationManager.ConnectionStrings["MainFYPConnectionString"].ConnectionString;
using (SqlConnection con = new SqlConnection(constr))
{
using (SqlCommand cmd = new SqlCommand("UPDATE tbl_Employees SET FName=#FName, LName=#LName, Email=#Email, DOB=#DOB, EmpRole = Emp#Role, Notes = #Notes WHERE (Emp_ID = #Emp_ID)"))
{
cmd.Parameters.AddWithValue("#Emp_ID", Emp_ID);
cmd.Parameters.AddWithValue("#FName", FName);
cmd.Parameters.AddWithValue("#Lname", LName);
cmd.Parameters.AddWithValue("#Email", Email);
cmd.Parameters.AddWithValue("#DOB", DOB);
cmd.Parameters.AddWithValue("#EmpRole", role);
cmd.Parameters.AddWithValue("#Notes", notes);
cmd.Connection = con;
con.Open();
cmd.ExecuteNonQuery();
con.Close();
}
}
datagrid.EditIndex = -1;
this.BindGrid();
}
If anyone has any idea what is wrong the help would be greatly appreciated

Re-populating checkboxlist in a GridView from SQL comma-separated string

Here is my case.
I've saved data from CheckBoxList:
foreach (ListItem li in CheckBoxList1.Items)
{
Steps = String.Join(", ", CheckBoxList1.Items.Cast<ListItem>()
.Where(i => i.Selected));
}
It works fine but what I want is to get back this data from database in checkBoxList inside a DataGrid.
And bellow are many things I tried. Please help:
<div align="center" style="margin-top: 50px;">
<asp:GridView ID="GridView1" runat="server" BackColor="White" DataKeyNames="SNo"
OnRowUpdating="GridView1_RowUpdating" AutoGenerateColumns="False"
OnRowCancelingEdit="GridView1_RowCancelingEdit"
OnRowEditing="GridView1_RowEditing"
BorderColor="#DEDFDE" BorderStyle="None" BorderWidth="1px" CellPadding="4"
ForeColor="Black" GridLines="Vertical" ShowFooter="True" OnRowDataBound="GridView1_RowDataBound">
<AlternatingRowStyle BackColor="White" />
<Columns>
<asp:BoundField DataField="TransactionName" HeaderText="Transaction Name" />
<asp:BoundField DataField="Category" HeaderText="Category" />
<asp:TemplateField HeaderText="Steps">
<ItemTemplate>
<asp:Label ID="lblBrand" runat="server" Text='<%#Eval("Steps") %>'>
</asp:Label>
<asp:CheckBoxList ID="CheckBoxList2" runat="server">
</asp:CheckBoxList>
</ItemTemplate>
<EditItemTemplate>
<asp:CheckBoxList ID="CheckBoxList1" runat="server">
</asp:CheckBoxList>
</EditItemTemplate>
</asp:TemplateField>
<asp:CommandField ShowEditButton="True" />
</Columns>
<EditRowStyle Height="10px" Width="2px" />
<FooterStyle BackColor="#CCCC99" />
<HeaderStyle BackColor="#6B696B" Font-Bold="True" ForeColor="White" />
<PagerStyle BackColor="#F7F7DE" ForeColor="Black" HorizontalAlign="Right" />
<RowStyle BackColor="#F7F7DE" />
<SelectedRowStyle BackColor="#CE5D5A" Font-Bold="True" ForeColor="White" />
<SortedAscendingCellStyle BackColor="#FBFBF2" />
<SortedAscendingHeaderStyle BackColor="#848384" />
<SortedDescendingCellStyle BackColor="#EAEAD3" />
<SortedDescendingHeaderStyle BackColor="#575357" />
</asp:GridView>
The C# code behind
private void Bind_CheckBoxList()
{
DataTable dt;
String SQL = "SELECT * from TransactionDetail";
string sConstr = ConfigurationManager.ConnectionStrings["conStr"].ConnectionString;
using (SqlConnection conn = new SqlConnection(sConstr))
{
using (SqlCommand comm = new SqlCommand(SQL, conn))
{
conn.Open();
using (SqlDataAdapter da = new SqlDataAdapter(comm))
{
dt = new DataTable("tbl");
da.Fill(dt);
}
conn.Close();
}
}
GridView1.DataSource = dt;
GridView1.DataBind();
}
if (e.Row.RowType == DataControlRowType.DataRow)
{
CheckBoxList c = (CheckBoxList)e.Row.FindControl("CheckBoxList2");
DataTable dt;
String SQL = "SELECT * FROM TransactionDetail";
string sConstr = ConfigurationManager.ConnectionStrings["conStr"].ConnectionString;
using (SqlConnection conn = new SqlConnection(sConstr))
{
using (SqlCommand comm = new SqlCommand(SQL, conn))
{
conn.Open();
using (SqlDataAdapter da = new SqlDataAdapter(comm))
{
if (c != null)
{
Label test = (Label)(e.Row.FindControl("lblBrand"));
Steps = test.Text;
string[] items = Steps.Split(new[] { ", " }, StringSplitOptions.None);
foreach (ListItem li in c.Items)
li.Selected = items.Contains(li.Text);
}
dt = new DataTable("tbl");
da.Fill(dt);
}
}
c.DataSource = dt;
c.DataTextField = what to write here to pass the array Text;
c.DataValueField = "SNo";
c.DataBind();
}
}

Hey thanks i solve it by creating another table for Steps and same for Documents Required ,,, its now showing the checkBoxList that i want into the datagrid and bellow the Code
if ((e.Row.RowState & DataControlRowState.Edit) == 0)
{
CheckBoxList c = (CheckBoxList)e.Row.FindControl("CheckBoxList2");
CheckBoxList CheckBoxListDR = (CheckBoxList)e.Row.FindControl("CheckBoxList3");
DataTable dt;
String SQL = "SELECT distinct S.Steps, D.DocumentsRequired, T.TransactionID FROM [StepsIsSelectedTable] S JOIN TransactionDetail T " +
" ON S.TransactionIDSteps = T.TransactionID JOIN DocumentsRequiredIsSelected D " +
"ON D.TransactionIDDR = T.TransactionID WHERE " +
"TransactionIDDR ='" + TreeView1.SelectedValue + "' and S.StepsIsSelected='True' and D.DocumentsRequiredIsSelected='True'" +
" group by S.Steps, D.DocumentsRequired ,T.TransactionID";
string sConstr = ConfigurationManager.ConnectionStrings["conStr"].ConnectionString;
using (SqlConnection conn = new SqlConnection(sConstr))
{
using (SqlCommand comm = new SqlCommand(SQL, conn))
{
conn.Open();
using (SqlDataAdapter da = new SqlDataAdapter(comm))
{
dt = new DataTable("tbl");
da.Fill(dt);
}
}
c.DataSource = dt;
CheckBoxListDR.DataSource = dt;
c.DataTextField = "Steps";
c.DataValueField = "TransactionID";
CheckBoxListDR.DataTextField = "DocumentsRequired";
CheckBoxListDR.DataValueField = "TransactionID";
c.DataBind();
c.SelectedValue = "TransactionID";
CheckBoxListDR.DataBind();
CheckBoxListDR.SelectedValue = "1";
}
}

How to Add a discrete row to gridview

I am binding the gridview and showing their corresponding total in footer without any error. Now I want to add extra runs as below highlighted in image(which is completely discrete datarow and it does not belong to dataset).I want to achieve functionality like below Image.
Here is my code :
<asp:GridView ID="gvFirstInningBatting" runat="server" AllowSorting="True" AutoGenerateColumns="false"
GridLines="None" AllowPaging="false" CellPadding="4" CssClass="GridViewStyle" OnRowDataBound="gvFirstInningBatting_RowDataBound"
ShowFooter="true" ShowHeader="true" Width="100%">
<Columns>
<asp:BoundField DataField="P_PlayerPopulerName" HeaderText="Batting" HeaderStyle-HorizontalAlign="Center"
ItemStyle-HorizontalAlign="Left" ItemStyle-Width="20%" />
<asp:BoundField DataField="SBTS_PlayerStatus" HeaderStyle-HorizontalAlign="Center"
ItemStyle-HorizontalAlign="Left" ItemStyle-Width="20%" />
<asp:BoundField DataField="SBTS_RunsScored" HeaderText="R" HeaderStyle-HorizontalAlign="Center"
ItemStyle-HorizontalAlign="Center" ItemStyle-Width="10%" />
<asp:BoundField DataField="SBTS_MinutesBatted" HeaderText="M" HeaderStyle-HorizontalAlign="Center"
ItemStyle-HorizontalAlign="Center" ItemStyle-Width="10%" />
<asp:BoundField DataField="SBTS_BallsPlayed" HeaderText="B" HeaderStyle-HorizontalAlign="Center"
ItemStyle-HorizontalAlign="Center" ItemStyle-Width="10%" />
<asp:BoundField DataField="SBTS_Fours" HeaderText="4s" HeaderStyle-HorizontalAlign="Center"
ItemStyle-HorizontalAlign="Center" ItemStyle-Width="10%" />
<asp:BoundField DataField="SBTS_Sixes" HeaderText="6s" HeaderStyle-HorizontalAlign="Center"
ItemStyle-HorizontalAlign="Center" ItemStyle-Width="10%" />
<asp:BoundField DataField="SBTS_StrikeRate" HeaderText="SR" HeaderStyle-HorizontalAlign="Center"
ItemStyle-HorizontalAlign="Center" ItemStyle-Width="10%" />
</Columns>
</asp:GridView>
In C#
protected void BindGridView(int scheduleId)
{
SqlConnection dBConnection = null;
try
{
dBConnection = new SqlConnection();
dBConnection.ConnectionString = ConfigurationManager.ConnectionStrings["***"].ConnectionString;
SqlDataAdapter dataAdapter = new SqlDataAdapter();
SqlCommand cmd = new SqlCommand("SP_NAME", dBConnection);
cmd.CommandType = CommandType.StoredProcedure;
dBConnection.Open();
DataSet ds = new DataSet();
DataTable dtBatting = new DataTable();
dataAdapter.SelectCommand = cmd;
dataAdapter.Fill(ds);
int gvBattingCount = Convert.ToInt32(cmd.Parameters["#BattingRowsCount"].Value);
for (int i = 0; i < gvBattingCount; i++)
{
if (ds.Tables[i].Rows.Count > 0)
{
if (i == 0)
{
DataRow dr1st;
ds.Tables[i].DefaultView.RowFilter = "SBTS_PlayerIsBatted = 1";
dtBatting = ds.Tables[i].DefaultView.ToTable();
dr1st = dtBatting.NewRow();
dr1st["P_PlayerPopulerName"] = " ";
dr1st["SBTS_RunsScored"] = 36;
dr1st["SBTS_PlayerStatus"] = "Extras";
dr1st["SBTS_MinutesBatted"] = 0;
dr1st["SBTS_BallsPlayed"] = 0;
dr1st["SBTS_Fours"] = 0;
dr1st["SBTS_Sixes"] = 0;
dr1st["SBTS_StrikeRate"] = 0;
dtBatting.Rows.Add(dr1st);
gvFirstInningBatting.DataSource = dtBatting;
gvFirstInningBatting.DataBind();
}
}
}
}
the grid is working if I use dr1st["SBTS_Sixes"] = 0; but it shows 0 in the row and if I use dr1st["SBTS_Sixes"] = DBNull.Value; then it is throwing error
Object cannot be cast from DBNull to other types.
What should I do, Please help me out.

Can't get value from radio button on gridview on C#

Hello i have a Gridview with 4 radio buttons and i want to get the value from them, and no matter what i do the value is always false, could someone tellme where is my mistake?
This is the code of the gridview:
<asp:GridView ID="GridView8" runat="server" Width="903px"
Height="516px" CellPadding="4" ForeColor="#333333" GridLines="None"
Visible="False"
>
<AlternatingRowStyle BorderColor="Black" BackColor="White" />
<Columns>
<asp:TemplateField HeaderText="Solicitante/">
<ItemTemplate>
<asp:RadioButton ID="optCl1" runat="server" Text="SI" GroupName="optCl" />
<asp:RadioButton ID="optCl2" runat="server" Text="NO" GroupName="optCl" />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="CoGarante">
<ItemTemplate >
<asp:RadioButton ID="optGar1" runat="server" Text="SI" GroupName="optGar" />
<asp:RadioButton ID="optGar2" runat="server" Text="NO" GroupName="optGar" />
</ItemTemplate>
</asp:TemplateField>
</Columns>
<EditRowStyle BorderColor="Black" />
<FooterStyle BackColor="#990000" BorderColor="Black" ForeColor="White"
Font-Bold="True" />
<HeaderStyle BackColor="#990000" BorderColor="Black" Font-Bold="True"
ForeColor="White" />
<PagerStyle ForeColor="#333333" HorizontalAlign="Center" BackColor="#FFCC66" />
<RowStyle BackColor="#FFFBD6" ForeColor="#333333" />
<SelectedRowStyle BackColor="#FFCC66" Font-Bold="True" ForeColor="Navy" />
<SortedAscendingCellStyle BackColor="#FDF5AC" />
<SortedAscendingHeaderStyle BackColor="#4D0000" />
<SortedDescendingCellStyle BackColor="#FCF6C0" />
<SortedDescendingHeaderStyle BackColor="#820000" />
</asp:GridView>
The code of the function that read the radiobutton
protected void saveQuestions()
{
foreach (GridViewRow row in GridView8.Rows)
{
RadioButton rb = row.Cells[2].FindControl("optGar2") as RadioButton;
Response.Write(rb.Checked);
}
conn.Close();
}
The code of the function that set the data on the gridview:
protected void loadQuestions()
{
OdbcConnection conn = connection();
conn.Open();
OdbcCommand findSql = new OdbcCommand("SELECT question AS PREGUNTAS,id FROM questionary_reg WHERE(status='1')", conn);
GridView8.DataSource = null;
DataTable dt = new DataTable();
dt.Load(findSql.ExecuteReader());
GridView8.DataSource = dt;
GridView8.DataBind();
conn.Close();
}

The problem because happen postback and reset the values inside the gridview, make sure you
call this function loadQuestions() on if !Postback ONLY
if(!IsPostBack){
loadQuestions();
}
#UPDATE 1 WORKING CODE :
//Design
<asp:GridView runat="server" ID="gv">
<Columns>
<asp:TemplateField>
<ItemTemplate>
<asp:RadioButton runat="server" ID="rd" />
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
<asp:Button runat="server" ID="btn" onclick="btn_Click" />
//Code
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
using (SqlConnection cn = new SqlConnection(ConfigurationManager.ConnectionStrings["ConnStringDb1"].ToString()))
{
try
{
String cmdText = "SELECT * FROM Image WHERE IsDeleted=#isDeleted";
SqlCommand cmd = new SqlCommand(cmdText, cn);
cmd.Parameters.AddWithValue("#IsDeleted", "false");
cn.Open();
SqlDataAdapter myAdapter = new SqlDataAdapter(cmd);
DataTable dt_Category = new DataTable();
myAdapter.Fill(dt_Category);
cn.Close();
gv.DataSource = dt_Category;
gv.DataBind();
}
catch (Exception ex)
{
}
}
}
}
protected void btn_Click(object sender, EventArgs e)
{
foreach (GridViewRow gvr in gv.Rows)
{
RadioButton rd = (RadioButton)gvr.FindControl("rd");
if (rd.Checked)
{
}
else
{
}
}
}

Maybe you need a 'CheckedChanged' event: (Tested and working)
In ASPX set (in this example, you can to see label display the number of row selected)
<Columns>
<asp:TemplateField>
<ItemTemplate>
<asp:RadioButton ID="rbtnSelect" AutoPostBack="true" runat="server" OnCheckedChanged="rbtnSelect_CheckedChanged" />
</ItemTemplate>
</asp:TemplateField>
</Columns>
and code-behing set
protected void rbtnSelect_CheckedChanged(object sender, EventArgs e)
{
RadioButton selectButton = (RadioButton)sender;
GridViewRow row = (GridViewRow)selectButton.Parent.Parent;
int a = row.RowIndex;
foreach (GridViewRow rw in gvCursos.Rows)
{
if (selectButton.Checked)
{
if (rw.RowIndex != a)
{
lbResultado.Text = rw.RowIndex.ToString();
RadioButton rd = rw.FindControl("rbtnSelect") as RadioButton;
rd.Checked = false;
}
}
}
}

Change this:
RadioButton rb = row.Cells[2].FindControl("optGar2") as RadioButton;
To this:
RadioButton rb = row.FindControl("optGar2") as RadioButton;

for (int i = 0; i < GridView8.Rows.Count; i++)
{
if (GridView8.Rows[i].RowType == DataControlRowType.DataRow)
{
RadioButton rb= (RadioButton)grdView.Rows[i].FindControl("optGar2");
Response.Write(rb.Checked);
}
}

foreach (GridViewRow gvp in gridView1.Rows)
{
System.Web.UI.HtmlControls.HtmlInputRadioButton rd = (System.Web.UI.HtmlControls.HtmlInputRadioButton)gvp.FindControl("rd");
if (rd.Checked)
{
string s = rd.Value;
}
else
{
}
}
design view
<ItemTemplate>
<input runat="server" id='rd' type="radio" value='<%# Eval("id") %>' onclick="javascript:SelectSingleRadiobutton(this.id)" />
</ItemTemplate>

Gridview in Modal Popup Extender- Postback Issues?

I have a C# .Net application with a gridview within an Ajax Modal Popup (VS2008). I have the grid view set to return 10 records per page with paging enabled.
When the user clicks to change page within the gridview there is a postback which closes the modal window and then opens it again using ModalPopup.show();
Is there any way to avoid the postback of the whole page and just postback the gridview whilst keeping the modal window active? At the moment the postback of the whole page gives the impression of flicker...
<asp:Panel ID="Panel1" runat="server" Font-Italic="True"
Font-Names="Times New Roman" Font-Size="Small" ForeColor="#82B8DE">
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False"
CellPadding="4" ForeColor="#333333" GridLines="None"
onpageindexchanging="GridView1_PageIndexChanging"
onrowdatabound="GridView1_RowDataBound"
onselectedindexchanged="GridView1_SelectedIndexChanged"
SelectedIndex="0" ShowHeader="False" Width="700px" ControlID="GridView1"
EventName="PageIndexChanging" Font-Italic="True" Font-Names="Times New Roman"
Font-Size="Medium">
<PagerSettings PageButtonCount="12" />
<RowStyle CssClass="RowStyle" BackColor="#EFF3FB" Font-Italic="True"
Font-Names="Times New Roman" Font-Size="Small" ForeColor="#82B8DE" />
<Columns>
<asp:BoundField DataField="Address" ReadOnly="True">
<ItemStyle Width="385px" />
</asp:BoundField>
<asp:BoundField DataField="XCoord" ReadOnly="True" ShowHeader="False" >
<ItemStyle CssClass="Hidden" />
</asp:BoundField>
<asp:BoundField DataField="YCoord" ReadOnly="True" ShowHeader="False" >
<ItemStyle CssClass="Hidden" />
</asp:BoundField>
</Columns>
<FooterStyle CssClass="FooterStyle" BackColor="#507CD1" Font-Bold="True"
ForeColor="White" />
<PagerStyle BackColor="#2461BF" ForeColor="White" HorizontalAlign="Center" />
<SelectedRowStyle CssClass="SelectedRowStyle" BackColor="#D1DDF1"
Font-Bold="True" ForeColor="#333333" />
<HeaderStyle CssClass="HeaderStyle" BackColor="#507CD1" Font-Bold="True"
ForeColor="White" />
<EditRowStyle BackColor="#2461BF" Font-Italic="True"
Font-Names="Times New Roman" Font-Size="Medium" />
<AlternatingRowStyle BackColor="White" />
</asp:GridView>
</asp:Panel>
<ajax:ModalPopupExtender ID="ModalPopupExtender1" runat="server" PopupControlID="Panel1" TargetControlID="dummy"
BackgroundCssClass="ModalBackgroundGrid" BehaviorID="ModalGrid">
</ajax:ModalPopupExtender>
And the code behind...
public void Page_Load(object sender, EventArgs e)
{
try
{
if (!(Page.IsPostBack))
{
GridView1.EnableViewState = true;
GridView1.AllowPaging = true;
GridView1.PageSize = 10;
GridView1.PagerSettings.Mode = PagerButtons.Numeric;
GridView1.Visible = true;
}
if (!m_bDisclaimerShown)
{
m_bDisclaimerShown = true;
mpe1.Show();
TabContainer.Visible = true;
ScaleBar1.Visible = true;
}
}
catch (Exception ex)
{
ShowMsg("Error - " + ex.Message);
}
}
protected void btnHide_Click(object sender, EventArgs e)
{
mpe1.Hide();
TabContainer.Visible = true;
ScaleBar1.Visible = true;
}
protected void cmdZoomAddress_Click(object sender, EventArgs e)
{
try
{
if (txtPostCode.Text.Length >= 7 && OpenDB())
{
string strPostcode = txtPostCode.Text;
strPostcode = strPostcode.Substring(0, 4) + strPostcode.Substring(strPostcode.Length - 3, 3);
SqlCommand sqlCmd = new SqlCommand();
sqlCmd.Connection = m_sqlConn;
sqlCmd.CommandType = System.Data.CommandType.StoredProcedure;
sqlCmd.CommandText = "sde.dbo.sp_selAddressByPostcode";
sqlCmd.Parameters.Add("#Postcode", SqlDbType.VarChar);
sqlCmd.Parameters["#Postcode"].Value = strPostcode;
SqlDataAdapter sqlAdapter = new SqlDataAdapter(sqlCmd);
m_sqlDataTable = new DataTable();
sqlAdapter.Fill(m_sqlDataTable);
GridView1.DataSource = m_sqlDataTable;
GridView1.DataBind();
GridView1.Visible = true;
ModalPopupExtender1.Show();
}
else
{
ShowMsg("Error - No Postal Addresses Returned");
}
}
catch (Exception ex)
{
ShowMsg("Error - " + ex.Message);
}
finally
{
CloseDB();
}
}
protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)
{
if (sender != null)
{
GridView1.PageIndex = e.NewPageIndex;
GridView1.DataSource = m_sqlDataTable;
GridView1.DataBind();
ModalPopupExtender1.Show();
}
}
protected void GridView1_SelectedIndexChanged(object sender, EventArgs e)
{
GridViewRow GVRow = GridView1.SelectedRow;
int iX = (int)Convert.ToSingle(GVRow.Cells[1].Text);
int iY = (int)Convert.ToSingle(GVRow.Cells[2].Text);
GridView1.Visible = false;
MoveMap(iX, iY);
}
public void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.DataItemIndex >= 0)
{
e.Row.Attributes["style"] = "cursor:pointer";
e.Row.Attributes.Add("onMouseOver", "this.style.cursor='hand';");
e.Row.Attributes.Add("onclick", ClientScript.GetPostBackEventReference(GridView1, "Select$" + e.Row.RowIndex.ToString()));
}
}
protected override void Render(HtmlTextWriter writer)
{
foreach (GridViewRow r in GridView1.Rows)
{
if (r.RowType == DataControlRowType.DataRow)
{
Page.ClientScript.RegisterForEventValidation(GridView1.UniqueID, "Select$" + r.RowIndex);
}
}
base.Render(writer);
}

thanks for your suggestion. I've put the gridview into a...
<asp:UpdatePanel>
<ContentTemplate>
The modal now stays however when I click a record in the grid view it doesn't close!