Getting datas from gridview for selected row? - asp.net

Question

i'm new to asp.net. i'm doing one project. in that i've used one gridview and fetch datas from database using sqldatasource.
gridview code is
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False"
DataSourceID="Library" CellPadding="4" ForeColor="#333333"
GridLines="None" OnRowDataBound="GridView1_RowDataBound" >
<RowStyle BackColor="#EFF3FB" />
<Columns>
<asp:BoundField DataField="Sl_No" HeaderText="Sl_No" SortExpression="Sl_No" />
<asp:BoundField DataField="Title" HeaderText="Title" SortExpression="Title" />
<asp:BoundField DataField="Author" HeaderText="Author"
SortExpression="Author" />
<asp:BoundField DataField="Publication" HeaderText="Publication"
SortExpression="Publication" />
<asp:BoundField DataField="Available" HeaderText="Status"
SortExpression="Available" />
<asp:TemplateField HeaderText="Availability">
<ItemTemplate>
<asp:Image ID="Image1" runat="server" ImageUrl='<%# Eval("Available") %>' />
</ItemTemplate>
</asp:TemplateField>
<asp:BoundField DataField="RIUserTaken" HeaderText="RIUserTaken"
SortExpression="RIUserTaken" Visible="False" />
<asp:TemplateField HeaderText="Taken By" ShowHeader="False">
<ItemTemplate>
<asp:Label ID="Label4" runat="server" Text='<%# Eval("RIUserTaken", "{0}") %>'></asp:Label>
<asp:Button ID="SendRequest" runat="server" Text="Button" Visible="False"
onclick="SendRequest_Click" CommandName="SendRequestCmd" />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Taken Date" InsertVisible="False"
ShowHeader="False">
<ItemTemplate>
<asp:Label ID="Label3" runat="server" Text='<%# Eval("TakenDate") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
</Columns>
<FooterStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
<PagerStyle BackColor="#2461BF" ForeColor="White" HorizontalAlign="Center" />
<SelectedRowStyle BackColor="#D1DDF1" Font-Bold="True" ForeColor="#333333" />
<HeaderStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
<EditRowStyle BackColor="#2461BF" />
<AlternatingRowStyle BackColor="White" /> </asp:GridView>
code is one of the column of the grid view. if i click on that button, i've to store that button contains rows all datas in string variable. like
string slno="";
slno=gridview1.cells[0].text; (i'm not sure it is correct or not)
plz anyone help me??
thanks in advance :)

Answer 1

From msdn, you should check this.
GridView.SelectedIndexChanged event
void CustomersGridView_SelectedIndexChanged(Object sender, EventArgs e)
{
// Get the currently selected row using the SelectedRow property.
GridViewRow row = CustomersGridView.SelectedRow;
// Display the company name from the selected row.
// In this example, the third column (index 2) contains
// the company name.
MessageLabel.Text = "You selected " + row.Cells[2].Text + ".";
}
void CustomersGridView_SelectedIndexChanging(Object sender, GridViewSelectEventArgs e)
{
// Get the currently selected row. Because the SelectedIndexChanging event
// occurs before the select operation in the GridView control, the
// SelectedRow property cannot be used. Instead, use the Rows collection
// and the NewSelectedIndex property of the e argument passed to this
// event handler.
GridViewRow row = CustomersGridView.Rows[e.NewSelectedIndex];
// You can cancel the select operation by using the Cancel
// property. For this example, if the user selects a customer with
// the ID "ANATR", the select operation is canceled and an error message
// is displayed.
if (row.Cells[1].Text == "ANATR")
{
e.Cancel = true;
MessageLabel.Text = "You cannot select " + row.Cells[2].Text + ".";
}
}

Answer 2

Do these things
Step 1. Wire up a RowCommand Evnt to your GridView
Step 2. Inside that event at code-behind, do this
if(e.CommandName.Equals("SendRequestCmd"))
{
var clickedRow = ((Button)e.CommandSource).NamingContainer as GridViewRow;
// now access the cells like this
var clickedSLNo = clickedRow.cells[0].Text;
}
Update:
e.CommandSource definition
A instance of the System.Object class that represents the source of the command.
IButtonControl.CommandArgument definition
A control that implements the IButtonControl interface must implement the CommandArgument property and the CommandName property to indicate the argument and command name that are propagated to the Command event.