how i get the clicked row in gridview with link button add by code asp.net?

Question

Hi members

i want to get the row of the gridview when i click the linkbutton column

this is my try

 Protected Sub OnSubmit(ByVal sender As Object, ByVal e As EventArgs)
        Dim lnkSubmit As LinkButton = TryCast(sender, LinkButton)
        Dim row As GridViewRow = TryCast(lnkSubmit.NamingContainer, GridViewRow)
        Dim message As String = "CustomerId: " & row.Cells(0).Text & "\n Name: " + row.Cells(1).Text & "\n Value: " + row.Cells(2).Text
        ClientScript.RegisterStartupScript(Me.GetType(), "alert", "alert('" & message & "');", True)


    End Sub
    Protected Sub GridView1_RowDataBound(sender As Object, e As GridViewRowEventArgs) Handles GridView1.RowDataBound





        If e.Row.RowType = DataControlRowType.DataRow Then
                If Not e.Row.Cells(4).Text = " " Then


                    Dim value As Integer = Integer.Parse(e.Row.Cells(4).Text)

                    If value > 0 Then
                    Dim lnkSubmit = New LinkButton()
                    lnkSubmit.ID = "lnkSubmit"
                    lnkSubmit.Text = "Ajout_AU_DEVIS"
                    lnkSubmit.CommandName = "Select"
                    lnkSubmit.CommandArgument = (e.Row.RowIndex + 1).ToString()
                    AddHandler lnkSubmit.Click, AddressOf OnSubmit
                    e.Row.Cells(9).Controls.Add(New Label() With {.Text = " "})
                    e.Row.Cells(9).Controls.Add(lnkSubmit)
                End If
                End If
            End If




    End Sub

Answer 1

Hi @HOUSSEM MAHJOUBI,

I think you can put the linkbutton on the front.The LinkButton Click event will be implemented using the RowCommand

event, so when the LinkButton is clicked, the RowCommand event will fire to get the cell value of the ASP.Net GridView.

[https://learn.microsoft.com/en-us/dotnet/api/system.web.ui.webcontrols.gridview.rowcommand?view=netframework-4.8

 <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false" OnRowCommand="GridView1_RowCommand">
    <Columns>
        <asp:TemplateField HeaderText="Name" ItemStyle-Width="150">
            <ItemTemplate>
                <asp:TextBox ID="txtName" runat="server" Text='<%# Eval("Name") %>' />
            </ItemTemplate>
        </asp:TemplateField>
        <asp:BoundField DataField="Country" HeaderText="Country" ItemStyle-Width="150px" />
        <asp:TemplateField>
            <ItemTemplate>
                <asp:LinkButton Text="Select" runat="server" CommandName="Select" CommandArgument="<%# Container.DataItemIndex %>" />
            </ItemTemplate>
        </asp:TemplateField>
    </Columns>
</asp:GridView>

Protected Sub Page_Load(sender As Object, e As EventArgs) Handles Me.Load
        If Not Me.IsPostBack Then
            Dim dt As New DataTable()
            dt.Columns.AddRange(New DataColumn(2) {New DataColumn("Id"), New DataColumn("Name"), New DataColumn("Country")})
            dt.Rows.Add(1, "John Hammond", "United States")
            dt.Rows.Add(2, "Mudassar Khan", "India")
            dt.Rows.Add(3, "Suzanne Mathews", "France")
            dt.Rows.Add(4, "Robert Schidner", "Russia")
            GridView1.DataSource = dt
            GridView1.DataBind()
        End If
    End Sub
    Protected Sub GridView1_RowCommand(sender As Object, e As GridViewCommandEventArgs)
        If e.CommandName = "Select" Then
            Dim rowIndex As Integer = Convert.ToInt32(e.CommandArgument)
            Dim row As GridViewRow = GridView1.Rows(rowIndex)
            Dim name As String = TryCast(row.FindControl("txtName"), TextBox).Text
            Dim country As String = row.Cells(1).Text
            ClientScript.RegisterStartupScript(Me.GetType(), "alert", "alert('Name: " & name & "\nCountry: " & country + "');", True)
        End If
    End Sub

Best regards,

Lan Huang

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Answer 2

Use Gridview.SelectedIndexChanged event https://learn.microsoft.com/pt-br/dotnet/api/system.web.ui.webcontrols.gridview.selectedindexchanged?view=netframework-4.8.1

<asp:GridView ID="GridView1" runat="server" DataSourceID="MyData">
  <Columns>
    <asp:CommandField ShowSelectButton="True" />
    <asp:BoundField DataField="CustomerId" HeaderText="CustomerId" SortExpression="CustomerId" />
    <asp:BoundField DataField="Name" HeaderText="Name" SortExpression="Name" />
    <asp:BoundField DataField="Value" HeaderText="Value" SortExpression="Value" />
   </Columns>
 </asp:GridView>

Protected Sub GridView1_SelectedIndexChanged(sender As Object, e As EventArgs) Handles GridView1.SelectedIndexChanged
Dim row As GridViewRow = GridView1.SelectedRow
Dim message As String = "CustomerId: " & row.Cells(1).Text & "\n Name: " & row.Cells(2).Text & "\n Value: " & row.Cells(3).Text
ClientScript.RegisterStartupScript(Me.GetType(), "alert", "alert('" & message & "');", True)
  End Sub