Without using SelectedIndexChanged, how to retrieve value of each row from gridview? - asp.net

Question

I have a GridView,
without using SelectedIndexChanged, how can I retrieve the value of each row from GridView when click on each button in each row?
this is my aspx code
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataKeyNames="ProductID"
DataSourceID="SqlDataSource1" ShowHeader="False" AllowPaging="True" BorderColor="White"
CellPadding="6" GridLines="None" Height="100px" Width="800px">
<Columns>
<asp:TemplateField>
<ItemTemplate>
Card Name:
<asp:Label ID="Label1" runat="server" Text='<%# Bind("Name") %>'></asp:Label>
<br />
Cost :
<asp:Label ID="Label2" runat="server" Text='<%# Bind("Price") %>'></asp:Label>
<br />
<asp:Label ID="Label3" runat="server" Text='<%# Bind("ProductImgID") %>'></asp:Label>
<asp:Image ID="Image3" runat="server" ImageUrl='<%# Eval("ProductImgUrl", "images/{0}") %>' />
<br />
<asp:Button ID="btnAddProduct" runat="server" Text="Add" />
<br />
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>

Answer 1

One option can be to Bind the CommandArgument of the button to the ProductID
<asp:Button ID="btnAddProduct" runat="server" Text="Add" CommandArgument='<%#Bind("ProductID")%>' />
and then in the RowCommand event retrieve the ProductID and extract the row from database
string prodID=(string)e.CommandArgument()
then using the ID retrieve the row from database.

Answer 2

To get a row value, you have to get the row Reference, After getting the row you can easily get to the specified column and can get the value
Lets Consider you have a "link button control" in a template field column. For the gridview you have to set Row Command Event, and also in the edit template of the column, set a command name for the link button also say "lnkTest"
In RowCommand Event you have to include the following section of code
if(e.CommandName.Equals("lnkTest")) // Checks that link button was clicked
{
GridViewRow grdRow = (((LinkButton)e.CommandSource).Container)
// This Will give you the reference of the Row in which the link button was clicked
int grdRowIndex = grdRow.RowIndex;
//This will give you the index of the row
var uniqueDataKeyValue = GridView1.DataKeys[grdRowIndex].Value;
//This will give you the DataKey Value for the Row in which the link Control was click
Hope the above code will help

Answer 3

Add CommandArgument='<%# Container.DataItemIndex %>' to your Add button
<asp:Button ID="btnAddProduct" runat="server" Text="Add" CommandArgument='<%# Container.DataItemIndex %>'/>
To retrive Name, in gridview row command use this code
Dim gvr As GridViewRow = grvGRNCONs.Rows(e.CommandArgument)
Dim name As String = DirectCast(gvr.FindControl("Label1"), Label).Text
and so on..

Answer 4

<asp:GridView ID="grdResults" CssClass="CommonTable dataTable" AutoGenerateColumns="false" runat="server">
<Columns>
<asp:TemplateField HeaderText="Sl#">
<ItemTemplate>
<asp:Label ID="lblSlno" Text='<%# Container.DataItemIndex+1 %>' runat="server"></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="" ControlStyle-Height="15px" ControlStyle-Width="15px">
<HeaderStyle HorizontalAlign="Left" />
<ItemStyle HorizontalAlign="Left" CssClass="PInfoTd" />
<ItemTemplate>
<asp:ImageButton ID="lknassesno" ToolTip="Edit Assessment" Width="50" CssClass="NewButton" ***CommandName="LINK"***
runat="server" ImageUrl="~/img/Edit.png" />
<asp:HiddenField ID="hidassesmentno" Value='<%# EVAL("PAN_CODE")%>' runat="server" />
<asp:HiddenField ID="hidPendStatus" Value='<%# EVAL("Pstatus")%>' runat="server" />
<asp:HiddenField ID="hidIPNO"Value='<%#EVAL("IP_NO")%>' runat="server" />
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
**code behind**
Protected Sub grdResults_RowCommand(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewCommandEventArgs) Handles grdResults.RowCommand
If **e.CommandName = "LINK"** Then
Dim ctrl As Control = e.CommandSource
Dim grrow As GridViewRow = ctrl.Parent.NamingContainer
'Dim i As Integer = Convert.ToInt16(e.CommandArgument)
'Dim lknassesno As HiddenField = DirectCast(e.CommandSource, ImageButton)
Dim hidAssesmentNo As HiddenField = DirectCast(grdResults.Rows(grrow.RowIndex).FindControl("hidassesmentno"), HiddenField)
Dim lblstatus As HiddenField = DirectCast(grdResults.Rows(grrow.RowIndex).FindControl("hidPendStatus"), HiddenField)
Dim hidIpNo As HiddenField = DirectCast(grdResults.Rows(grrow.RowIndex).FindControl("hidIPNO"), HiddenField)
Dim Assno As String = hidAssesmentNo.Value
Dim Ipno As String = hidIpNo.Value
Dim st As String = ""
If lblstatus.Value = "Pending" Then
st = "E"`enter code here`
ElseIf lblstatus.Value = "Completed" Then
st = "V"
End If
Response.Redirect("Assessment.aspx?PAssNo=" & Assno & "&Mode=" & st & "&IPNO=" & Ipno & "")
End If
End Sub