Grid View Problem

Ranveer@2468 · February 6th, 2011, 11:16 AM

Hi,
This is Ranveer I am designing a website for job consultancy . My requirement as follows I would like to create a page for manager of website who can put vacancy on website and he can update delete the vacancy as per his requirement.
When Manager of website login this page should open and through this page he can insert new vacancy, he can delete the existing vacancy and he can update the vacancy.

And when other user login he can only see the vacancy posted by the Manager. He should not have update , delete and insert facility.

Pls help me
Regards
Ranveer Kumar

Imar · February 6th, 2011, 11:22 AM

Hi there,

That's quite a broad question. Is there anything in particular you need help with?

Also, take a look at the Data section of the getting started guide at the asp.net web site: http://www.asp.net/web-forms

Additionally, you may want to get a copy of my book Beginning ASP.NET 4 (or 3.5) in C# and VB which discuss stuff like this in detail. See my signature for links.

Cheers,

Imar

GeeTee991100 · February 18th, 2011, 10:31 AM

Hi,

I also have a gridview issue but I didnt want to start a thread. The soution displays the first page but when I click next page I get a blank 2nd page even though there are more than 50 records returned.

The code is as follows.

Code:

    <asp:GridView ID="GridView1" runat="server"  AllowPaging="true"
        OnPageIndexChanging="gridView_PageIndexChanging" >
        <Columns>
            <asp:TemplateField HeaderText="Session">
                <ItemTemplate>
                    <asp:CheckBox ID="myCheckbox" runat="server" />
                </ItemTemplate>
            </asp:TemplateField>
        </Columns>
    </asp:GridView>

Code behind is as follows

Code:

    Protected Sub gridView_PageIndexChanging(ByVal sender As Object, ByVal e As GridViewPageEventArgs)

        Me.GridView1.PageIndex = e.NewPageIndex
        Me.GridView1.DataBind()

    End Sub

can anyone help. I'm sure the code is ok. Is there anyting else I need to do?

Imar · February 18th, 2011, 11:40 AM

Quote:

I also have a gridview issue but I didnt want to start a thread.

Why not? New threads make things easier to manage for everybody. New topic = new thread.

That said, why are you manually implementing paging if you already set AllowPaging to true? Depending on your requirements, you shouldn't have to handle PageIndexChanging.

Cheers,

Imar

GeeTee991100 · February 18th, 2011, 12:07 PM

Hi,

Thanks for the response.

I use manual paging because the record set is produced in my code behind. I have to pull data back from a number of tables with each query dependent on the user selection. ie I want to display all students that are enrolled on course for a project etc. Where the project number and the course are input via three drop down lists thus I didnt think I could achieve this in mark up. Is it possible in mark up?

This is all my mark upcode

Code:

<%@ Page Title="Edit Register" Language="VB" MasterPageFile="~/MasterPages/MasterPage.master"
    AutoEventWireup="false" CodeFile="EditRegister.aspx.vb" Inherits="SessionsRegisters_Registers_EditRegister" %>

<asp:Content ID="Content1" ContentPlaceHolderID="head" runat="Server">
    <style type="text/css">
        .style1
        {
            width: 100%;
        }
        .style2
        {
            width: 127px;
        }
    </style>
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="cpMainContent" runat="Server">
    <asp:UpdatePanel ID="UpdatePanel1" runat="server">
        <ContentTemplate>
            <table class="style1">
                <tr>
                    <td class="style2">
                        Project No</td>
                    <td>
                        <asp:DropDownList ID="DropDownList1" runat="server" AutoPostBack="True" 
                            DataSourceID="LinqDataSource1" DataTextField="ProjectNo" 
                            DataValueField="ProjectNo" Height="25px">
                        </asp:DropDownList>
                    </td>
                </tr>
                <tr>
                    <td class="style2">
                        Project Ref</td>
                    <td>
                        <asp:DropDownList ID="DropDownList2" runat="server" AutoPostBack="True">
                        </asp:DropDownList>
                    </td>
                </tr>
                <tr>
                    <td class="style2">
                        Date of Activity</td>
                    <td>
                        <asp:DropDownList ID="DropDownList3" runat="server" AutoPostBack="True">
                        </asp:DropDownList>
                    </td>
                </tr>
            </table>
        </ContentTemplate>
    </asp:UpdatePanel>
    <asp:Button ID="Button1" runat="server" Text="Update Register" Visible="false" />
    <asp:LinqDataSource ID="LinqDataSource1" runat="server" ContextTypeName="DataClassesDataContext"
        OrderBy="ProjectNo" Select="new (ProjectNo)" TableName="Projects">
    </asp:LinqDataSource>
    <asp:GridView ID="GridView1" runat="server"  AllowPaging="true"
        OnPageIndexChanging="gridView_PageIndexChanging" >
        <Columns>
            <asp:TemplateField HeaderText="Session">
                <ItemTemplate>
                    <asp:CheckBox ID="myCheckbox" runat="server" />
                </ItemTemplate>
            </asp:TemplateField>
        </Columns>
    </asp:GridView>
</asp:Content>

GeeTee991100 · February 18th, 2011, 01:08 PM

Hi,

Do you need any more information?

Iwant the user to select the project from a drop down list then depending on which project selected populate the 2nd drop down list with all the relevant project references for the project then use that to populate a 3rd drop down list which will be all the dates that there was an activity for that project and that reference. This is why I build the gridview datasource in code behind and have to use manual paging on my gridview. Can I achieve that type of look up using asp mark up? Why does it only display one page? Can anyone help me ?

Thanx

Imar · February 18th, 2011, 02:00 PM

I think what you're missing is a reassignment of the data source. E.g. instead of:

Code:

Me.GridView1.PageIndex = e.NewPageIndex
Me.GridView1.DataBind()

You need something like

Code:

Me.GridView1.PageIndex = e.NewPageIndex
Me.GridView1.DataSource = GetDataSource()
Me.GridView1.DataBind()

where GetDataSource() represents the code needed to get the data. You probably have that in your Page_Load right now.

Cheers,

Imar

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