i have a master page, then i create a GridViewWithTextBoxes.aspx with selection of masterpage
however when i browser the gridview cant be seen
but if i never include with master page the gridview can been seen
then it work in c# not in vb.net
i was think is the page load part that cause the problem but i not sure what
can i know why?
this is my code
<%@ Page Title="" Language="vb" AutoEventWireup="false" MasterPageFile="~/loggedInMasterPage.Master" CodeBehind="trry.aspx.vb" Inherits="WebRole1.trry" %>
<asp:Content ID="Content1" ContentPlaceHolderID="head" runat="server">
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" runat="server">
<asp:GridView ID="GridView1" runat="server" ShowFooter="true"
AutoGenerateColumns="false" onrowcreated="Gridview1_RowCreated">
<Columns>
<asp:BoundField DataField="RowNumber" HeaderText="Row Number" />
<asp:TemplateField HeaderText="Header 1">
<ItemTemplate>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
<asp:gridview ID="Gridview3" runat="server" ShowFooter="true"
AutoGenerateColumns="false" onrowcreated="Gridview1_RowCreated">
<Columns>
<asp:BoundField DataField="RowNumber" HeaderText="Row Number" />
<asp:TemplateField HeaderText="Header 1">
<ItemTemplate>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Header 2">
<ItemTemplate>
<asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Header 3">
<ItemTemplate>
<asp:TextBox ID="TextBox3" runat="server"></asp:TextBox>
</ItemTemplate>
<FooterStyle HorizontalAlign="Right" />
<FooterTemplate>
<asp:Button ID="ButtonAdd" runat="server" Text="Add New Row"
onclick="ButtonAdd_Click" />
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Header 3">
<ItemTemplate>
<asp:Label ID="Label1" runat="server" Text="Click Me"></asp:Label>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:gridview>
<asp:Button ID="Button1" runat="server" Text="Save" onclick="Button1_Click" />
</asp:Content>
this is my vb code
Imports System.Data.SqlClient
Imports System.Data
Imports System.Collections.Specialized
Imports System.Text
Imports System
Imports System.Collections.Generic
Imports System.Linq
Imports System.Web
Imports System.Web.UI
Imports System.Web.UI.WebControls
Public Class trry
Inherits System.Web.UI.Page
Private Sub SetInitialRow()
Dim dt As New DataTable()
Dim dr As DataRow = Nothing
dt.Columns.Add(New DataColumn("RowNumber", GetType(String)))
dt.Columns.Add(New DataColumn("Column1", GetType(String)))
dt.Columns.Add(New DataColumn("Column2", GetType(String)))
dt.Columns.Add(New DataColumn("Column3", GetType(String)))
dr = dt.NewRow()
dr("RowNumber") = 1
dr("Column1") = String.Empty
dr("Column2") = String.Empty
dr("Column3") = String.Empty
dt.Rows.Add(dr)
'dr = dt.NewRow();
'Store the DataTable in ViewState
ViewState("CurrentTable") = dt
Gridview1.DataSource = dt
Gridview1.DataBind()
End Sub
Private Sub AddNewRowToGrid()
Dim rowIndex As Integer = 0
If ViewState("CurrentTable") IsNot Nothing Then
Dim dtCurrentTable As DataTable = DirectCast(ViewState("CurrentTable"), DataTable)
Dim drCurrentRow As DataRow = Nothing
If dtCurrentTable.Rows.Count > 0 Then
For i As Integer = 1 To dtCurrentTable.Rows.Count
'extract the TextBox values
Dim box1 As TextBox = DirectCast(Gridview1.Rows(rowIndex).Cells(1).FindControl("TextBox1"), TextBox)
Dim box2 As TextBox = DirectCast(Gridview1.Rows(rowIndex).Cells(2).FindControl("TextBox2"), TextBox)
Dim box3 As TextBox = DirectCast(Gridview1.Rows(rowIndex).Cells(3).FindControl("TextBox3"), TextBox)
drCurrentRow = dtCurrentTable.NewRow()
drCurrentRow("RowNumber") = i + 1
drCurrentRow("Column1") = box1.Text
drCurrentRow("Column2") = box2.Text
drCurrentRow("Column3") = box3.Text
rowIndex += 1
Next
dtCurrentTable.Rows.Add(drCurrentRow)
ViewState("CurrentTable") = dtCurrentTable
Gridview1.DataSource = dtCurrentTable
Gridview1.DataBind()
End If
Else
Response.Write("ViewState is null")
End If
'Set Previous Data on Postbacks
SetPreviousData()
End Sub
Private Sub SetPreviousData()
Dim rowIndex As Integer = 0
If ViewState("CurrentTable") IsNot Nothing Then
Dim dt As DataTable = DirectCast(ViewState("CurrentTable"), DataTable)
If dt.Rows.Count > 0 Then
For i As Integer = 1 To dt.Rows.Count - 1
Dim box1 As TextBox = DirectCast(Gridview1.Rows(rowIndex).Cells(1).FindControl("TextBox1"), TextBox)
Dim box2 As TextBox = DirectCast(Gridview1.Rows(rowIndex).Cells(2).FindControl("TextBox2"), TextBox)
Dim box3 As TextBox = DirectCast(Gridview1.Rows(rowIndex).Cells(3).FindControl("TextBox3"), TextBox)
box1.Text = dt.Rows(i)("Column1").ToString()
box2.Text = dt.Rows(i)("Column2").ToString()
box3.Text = dt.Rows(i)("Column3").ToString()
rowIndex += 1
Next
' ViewState["CurrentTable"] = dt;
End If
End If
End Sub
Protected Sub Page_Load(sender As Object, e As EventArgs)
If Not Page.IsPostBack Then
SetInitialRow()
End If
End Sub
Protected Sub ButtonAdd_Click(sender As Object, e As EventArgs)
AddNewRowToGrid()
End Sub
Protected Sub Button1_Click(sender As Object, e As EventArgs)
Dim rowIndex As Integer = 0
Dim sc As New StringCollection()
If ViewState("CurrentTable") IsNot Nothing Then
Dim dtCurrentTable As DataTable = DirectCast(ViewState("CurrentTable"), DataTable)
Dim drCurrentRow As DataRow = Nothing
If dtCurrentTable.Rows.Count > 0 Then
For i As Integer = 1 To dtCurrentTable.Rows.Count
'extract the TextBox values
Dim box1 As TextBox = DirectCast(Gridview1.Rows(rowIndex).Cells(1).FindControl("TextBox1"), TextBox)
Dim box2 As TextBox = DirectCast(Gridview1.Rows(rowIndex).Cells(2).FindControl("TextBox2"), TextBox)
Dim box3 As TextBox = DirectCast(Gridview1.Rows(rowIndex).Cells(3).FindControl("TextBox3"), TextBox)
'get the values here
'Response.Write(box1.Text + "<BR/>");
'Response.Write(box2.Text + "<BR/>");
'Response.Write(box3.Text);
sc.Add((box1.Text + "," + box2.Text & ",") + box3.Text)
rowIndex += 1
Next
InsertRecords(sc)
End If
End If
End Sub
'A method that returns a string which calls the connection string from the web.config
Private Function GetConnectionString() As String
'"DBConnection" is the name of the Connection String
'that was set up from the web.config file
Return System.Configuration.ConfigurationManager.ConnectionStrings("WeddingPerfection").ConnectionString
End Function
'A method that Inserts the records to the database
Private Sub InsertRecords(sc As StringCollection)
Dim conn As New SqlConnection(GetConnectionString())
Dim sb As New StringBuilder(String.Empty)
Dim splitItems As String() = Nothing
For Each item As String In sc
Const sqlStatement As String = "INSERT INTO SampleTables (Column1,Column2,Column3) VALUES"
If item.Contains(",") Then
splitItems = item.Split(",".ToCharArray())
sb.AppendFormat("{0}('{1}','{2}','{3}'); ", sqlStatement, splitItems(0), splitItems(1), splitItems(2))
End If
Next
Try
conn.Open()
Dim cmd As New SqlCommand(sb.ToString(), conn)
cmd.CommandType = CommandType.Text
cmd.ExecuteNonQuery()
Page.ClientScript.RegisterClientScriptBlock(GetType(Page), "Script", "alert('Records Successfuly Saved!');", True)
Catch ex As System.Data.SqlClient.SqlException
Dim msg As String = "Insert Error:"
msg += ex.Message
Throw New Exception(msg)
Finally
conn.Close()
End Try
End Sub
Protected Sub Gridview1_RowCreated(sender As Object, e As GridViewRowEventArgs)
If e.Row.RowType = DataControlRowType.DataRow Then
Dim l As Label = DirectCast(e.Row.FindControl("Label1"), Label)
If l IsNot Nothing Then
Dim script As String = "window.open('addGroup.aspx');"
l.Attributes.Add("onclick", script)
End If
End If
End Sub
End Class
Check this content’s
ContentPlaceHolderIDredirect toHeadContent. Contents are displayed when they are inside the<body>tag; not in the<head>Set the
ContentPlaceHolderID="contentplaceHolderInsideBodayTagOfMasterPage". Just do this.All of other code should work fine..