Need help in radiobutton within gridview - asp.net

Question

Thru radio button i am selecting the data from gridview. Here all radio buttons are selectable at a time. Actually it should not happen at a time user can select only one button which i could not do. My second problem is when i am selecting particular radiobutton that details should be displayed in text box. I have Itemid, ItemName, Quantity, Rate and Total field in gridview. These values i have inserted thru textbox so i have all the corresponding text box for all. So once i select particular radiobutton those details should be displayed in corresponding textbox. I have done the insertion coding for this but couldn't do selecting thru radiobutton and dispalying in textbox. Pls somebody help me in coding for this problem.
Thanks,
sumit

Answer 1

Sumit,
Don't use the html control, use the asp control:
<asp:RadioButton ID="RadioSelector" runat="server" GroupName="RadioSelectors" />
I had a similar problem in an ASP.NET class, and I followed this tutorial which worked perfectly.

Answer 2

Sounds like the classic master/detail pattern see here:
Tutorial 10: Master/Detail Using a Selectable Master GridView with a Details DetailView
You are fighting the intended workings of ASP.NET databound controls by using radio buttons. I don't like having select links either they're not exactly Web 2.0! but they can be quite easily replaced with a row click by doing this (or variation of same):
Select a row in an asp:GridView without using a Select Command

Answer 3

I read several articles on the net but none were suitable. I finally figured out my own solution without using either HTMLControls radiobutton nor using Javascript. This works for my requirement.
My Gridview html settings were as follows
<asp:GridView ID="grdVersion" runat="server"
AutoGenerateColumns="false" AllowPaging="true"
AutoGenerateEditButton="false" PageSize="10" Width="400px"
EmptyDataText="No records available."
OnRowDataBound="grdVersion_RowDataBound"
AutoGenerateSelectButton="false">
<Columns>
<asp:BoundField DataField="versionid" HeaderText="Version No." ItemStyle-Width="50px"
ItemStyle-Wrap="false" HtmlEncode="true" ReadOnly="true" />
<asp:BoundField DataField="version_date" HeaderText="Version Date" ItemStyle-Width="100px"
ItemStyle-Wrap="false" HtmlEncode="true" ReadOnly="true" />
<asp:BoundField DataField="remarks" HeaderText="Remarks" ItemStyle-Width="150px"
ItemStyle-Wrap="true" HtmlEncode="true" ReadOnly="true" />
**<asp:TemplateField HeaderText="Admin" HeaderStyle-Width="100px">
<ItemTemplate>
<asp:RadioButton ID="rdCurrent" runat="server"
Checked="false" Enabled="true" GroupName="rgVersion"
AutoPostBack="true"
OnCheckedChanged="rdCurrent_CheckChanged" />
</ItemTemplate>**
</asp:TemplateField>
</Columns>
</asp:GridView>
The server code (C#) was as follows,
DataTable dtDataSpaceVersions; //place this inside the codebehind page class
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
dtDataSpaceVersions = ListDataSpaceVersions();
ViewState["dtDataSpaceVersions"] = dtDataSpaceVersions;
PopulateGridVersion();
}
}
protected void PopulateGridVersion()
{
grdVersion.DataSource = dtDataSpaceVersions;
grdVersion.DataBind();
}
protected void rdCurrent_CheckChanged(object sender, EventArgs e)
{
Control selectedVersion = ((Control)sender).Parent;
if (ViewState["dtDataSpaceVersions"] != null)
dtDataSpaceVersions = (DataTable)ViewState["dtDataSpaceVersions"];
foreach (DataRow dtr in dtDataSpaceVersions.Rows)
{
if (dtr["versionid"].ToString() == ((System.Web.UI.WebControls.GridViewRow)selectedVersion.Parent).Cells[0].Text)
dtr[3] = "Y";
else
dtr[3] = "N";
}
PopulateGridVersion();
}
protected void grdVersion_RowDataBound(object sender, GridViewRowEventArgs e)
{
DataRowView drv;
if (e.Row.RowType == DataControlRowType.DataRow && e.Row.DataItem != null)
{
drv = (DataRowView)e.Row.DataItem;
if ((RadioButton)(e.Row.FindControl("rdCurrent")) != null)
if (drv.Row.ItemArray[3].ToString() == YesNo.N.ToString())
((RadioButton)(e.Row.FindControl("rdCurrent"))).Checked = false;
else
((RadioButton)(e.Row.FindControl("rdCurrent"))).Checked = true;
//setGridUserPermissionCheckBoxState(e.Row, drv);
}
}
public DataTable ListDataSpaceVersions()
{
string sql = string.Empty;
DataTable dt = new DataTable();
dt.Columns.Add("versionid", typeof(String));
dt.Columns.Add("version_date", typeof(String));
dt.Columns.Add("remarks", typeof(String));
dt.Columns.Add("is_current", typeof(String));
DataRow dtr;
dtr = dt.NewRow();
dtr[0] = "1.1";
dtr[1] = "12-Dec-2005";
dtr[2] = "Campaign Information";
dtr[3] = "N";
dt.Rows.Add(dtr);
dtr = dt.NewRow();
dtr[0] = "1.2";
dtr[1] = "06-Mar-2006";
dtr[2] = "Sales corrections";
dtr[3] = "N";
dt.Rows.Add(dtr);
dtr = dt.NewRow();
dtr[0] = "1.3";
dtr[1] = "24-Aug-2009";
dtr[2] = "Invoice reconciliation";
dtr[3] = "Y";
dt.Rows.Add(dtr);
dtr = dt.NewRow();
dtr[0] = "1.4";
dtr[1] = "30-May-2010";
dtr[2] = "Invoices verification";
dtr[3] = "N";
//dtr[0][0] = "";
dt.Rows.Add(dtr);
return dt;
}