DataGrid EditCommandColumn not firing events properly.

Discussion in 'ASP .Net' started by Richard Ryerson, Jan 28, 2004.

  1. Hello all, I hope all is well with you.

    I am having a seriously difficult time with this problem. Allow me to set
    up the problem.

    I have a System.Web.UI.Page with the following controls (watch the layout,
    some have child controls):

    1. DataGrid (dgContracts) - Lists current contracts.
    1.1. ButtonColumn (CommandName SelectContract) - Selects a contract to
    use.
    2. Repeater (rptrJobActivities) - Lists all Job Activities for a
    Contract/Job when a user selects a contract from

    dgContracts. Each RepeaterItem represents a single JobActivity.
    2.1. DropDownList (ddlInstallers <asp:DropDownList
    ID="ddlInstallerWorkers" DataSource='<%#

    InstallerWorkers()%>' DataTextField="FullName" DataValueField="WorkerId"
    Runat="server" />) Lists all available

    Installers (people)
    2.2. Button (btnAddInstaller <asp:Button CssClass="submit"
    ID="btnAddInstaller" Text="Add"

    OnClick="btnAddInstaller_Click"

    Runat="server" />) Adds the selected installer in ddlInstallers to the
    JobActivityInstallers collection.
    2.3. DataGrid (dgInstallers <asp:DataGrid ID="dgJobActivityInstallers"
    AutoGenerateColumns="False"

    Width="75%" Runat="server">)

    Displays the installers that are added to the job activity (AddHandlers to
    EditCommand, CancelCommand and

    UpdateCommand in

    rptrJobActivities_ItemCreated - NOTE: Originally I had these assigned in
    the <asp:DataGrid

    OnEditCommand="dgInstallers_EditCommand"
    OnCancelCommand="dgInstallers_CancelCommand"

    OnUpdateCommand="dgInstallers_UpdateCommand"/> until this problem came up)
    2.3.1. EditCommandColumn (<asp:EditCommandColumn ButtonType="LinkButton"
    CancelText="Cancel"

    EditText="Edit"

    UpdateText="Update"/>)


    A user will load this page, dgContracts is DataBind only on Not IsPostback,
    select a contract from dgContracts, by

    clicking the ButtonCol The page posts, dgContracts_ItemCommand fires -
    rpterJobActivities is DataBind, and

    rptrJobActivities is populated with all the Job Activities associated with
    the selected contract. Everytime

    rptrJobActivities_ItemCreated is fired dgInstallers is DataBind and
    AddHandlers are assigned for each EditCommand,

    CancelCommand and UpdateCommand (DataBind THEN AddHandlers)

    Inside each Job Activity, repeater item, basic data is displayed and
    dgInstallers is populated with Installers

    working on this Job Activity.

    The user is permitted to add new installers by selecting ddlInstallers and
    clicking btnAddInstaller. The page posts

    and the newly added installer appears in dgInstallers.
    btnAddInstaller_Click is fired and code adds to the

    collection of installers.

    Everything seems to work just fine up to this point.

    Now, when you click the EditCommandColumn 'Edit' Link it calls
    dgInstallers_EditCommand, we set the edit index and

    then DataBind. All well and good. When we click the EditCommandColumn
    "Cancel", the page just posts. No event is

    fired. If we instead click the EditCommandColumn "Update" link,
    dgInstallers_EditCommand is fired once again.

    When we hover the mouse over the Edit link, the actual link is:

    javascript:__doPostBack('rptrJobActivities$_ctl0$dgJobActivityInstallers$_ctl2$_ctl0','')

    When we hover the mouse over the Cancel link, the actual link is:

    javascript:__doPostBack('rptrJobActivities$_ctl0$dgJobActivityInstallers$_ctl2$_ctl1','')

    When we hover the mouse over the Update link, the actual link is:
    javascript:__doPostBack('rptrJobActivities$_ctl0$dgJobActivityInstallers$_ctl2$_ctl0','')

    Notice how the links for both Edit and Update are identical?

    Please help me figure why the update calls the edit and the cancel just
    posts...

    Thanks in advance.

    -Rick

    PS.

    Here is all the code, there are objects behind the scenes but these are
    tried and true.

    <%@ Page Language="vb" AutoEventWireup="false"
    Codebehind="JobTracking.aspx.vb"

    Inherits="Patio.PCMS.WebClient.JobTracking"%>
    <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
    <HTML>
    <HEAD>
    <title>JobTracking</title>
    <meta content="Microsoft Visual Studio .NET 7.1" name="GENERATOR">
    <meta content="Visual Basic .NET 7.1" name="CODE_LANGUAGE">
    <meta content="JavaScript" name="vs_defaultClientScript">
    <meta content="http://schemas.microsoft.com/intellisense/ie5"
    name="vs_targetSchema">
    <LINK href="/WebClient/Styles.css" type="text/css" rel="stylesheet">
    <script language="javascript" src="/WebClient/global.js"></script>
    </HEAD>
    <body onload="onDocumentReady();">
    <form id="Form1" method="post" runat="server">
    <asp:datagrid id=dgContracts runat="server" AutoGenerateColumns="False"
    DataSource="<%#

    Contracts %>">
    <Columns>
    <asp:EditCommandColumn CancelText="Cancel" EditText="Edit"

    UpdateText="Upate"></asp:EditCommandColumn>
    <asp:TemplateColumn HeaderText="Job #">
    <ItemTemplate>
    <asp:Label runat="server" Text='<%#

    DataBinder.Eval(Container, "DataItem.Job.JobNumber") %>'>
    </asp:Label>
    </ItemTemplate>
    </asp:TemplateColumn>
    <asp:TemplateColumn HeaderText="Product">
    <ItemTemplate>
    <asp:Label runat="server" Text='<%#

    DataBinder.Eval(Container, "DataItem.Product.Description") %>'>
    </asp:Label>
    </ItemTemplate>
    </asp:TemplateColumn>
    <asp:TemplateColumn HeaderText="Status">
    <ItemTemplate>
    <asp:Label runat="server" Text='<%#

    DataBinder.Eval(Container, "DataItem.Job.Status") %>'>
    </asp:Label>
    </ItemTemplate>
    </asp:TemplateColumn>
    <asp:ButtonColumn Text="Select" ButtonType="PushButton"

    ItemStyle-CssClass="submit" CommandName="Select"></asp:ButtonColumn>
    </Columns>
    </asp:datagrid>
    <br>
    <table width="100%" border="0" cellpadding="1" cellspacing="0">
    <asp:repeater id=rptrJobActivities runat="server" DataSource="<%#

    JobActivities(SelectedContractId)%>">
    <ItemTemplate>
    <tr style="FONT-WEIGHT: bold; COLOR: white; BACKGROUND-COLOR: navy">
    <td>
    Description
    </td>
    <td>
    Planned Start
    </td>
    <td>
    Planned End
    </td>
    <td>
    Actual End
    </td>
    <td>
    Amount Due
    </td>
    <td>
    Status
    </td>
    </tr>
    <tr>
    <td>
    <%# DataBinder.Eval(Container,

    "DataItem.Description") %>
    </td>
    <td>
    <%# DataBinder.Eval(Container,

    "DataItem.PlanStartDate.Date").ToShortDateString %>
    </td>
    <td>
    <%# DataBinder.Eval(Container,

    "DataItem.PlanEndDate.Date").ToShortDateString %>
    </td>
    <td>
    <%# DataBinder.Eval(Container,

    "DataItem.ActEndDate.Date").ToShortDateString %>
    </td>
    <td>
    <%# FormatCurrency(DataBinder.Eval(Container,

    "DataItem.AmountDue"), 0) %>
    </td>
    <td>
    <%# DataBinder.Eval(Container, "DataItem.Status") %>
    </td>
    </tr>
    <tr>
    <td colspan="3" align="center" valign="top">
    Installers
    <asp:DropDownList ID="ddlInstallerWorkers"

    DataSource='<%# InstallerWorkers()%>' DataTextField="FullName"
    DataValueField="WorkerId" Runat="server" />
    <asp:Button CssClass="submit" ID="btnAddInstaller"

    Text="Add" OnClick="btnAddInstaller_Click" Runat="server" />
    <asp:DataGrid ID="dgJobActivityInstallers"

    AutoGenerateColumns="False" Width="75%" Runat="server">
    <HeaderStyle BackColor="LightGrey" />
    <Columns>
    <asp:EditCommandColumn

    ButtonType="LinkButton" CancelText="Cancel" EditText="Edit"
    UpdateText="Update"/>
    <asp:TemplateColumn>
    <HeaderTemplate>
    Installer
    </HeaderTemplate>
    <ItemTemplate>
    <%#

    DataBinder.Eval(Container, "DataItem.FullName") %>
    </ItemTemplate>
    <EditItemTemplate>
    <%#

    DataBinder.Eval(Container, "DataItem.FullName") %>
    </EditItemTemplate>
    </asp:TemplateColumn>
    <asp:TemplateColumn>
    <HeaderTemplate>
    Lead Installer?
    </HeaderTemplate>
    <ItemTemplate>
    <%#

    DataBinder.Eval(Container, "DataItem.LeadFlag") %>
    </ItemTemplate>
    <EditItemTemplate>
    <asp:CheckBox

    ID="chkLeadInstaller" Checked='<%# DataBinder.Eval(Container,
    "DataItem.LeadFlag") %>' Runat="server" />
    </EditItemTemplate>
    </asp:TemplateColumn>
    </Columns>
    </asp:DataGrid>
    </td>
    <td colspan="3" align="center" valign="top">
    Comments
    <asp:Button CssClass="submit"

    ID="btnAddJobActivityComment" Text="Add" Runat="server" />
    <asp:DataGrid AutoGenerateColumns="False"

    ID="dgJobActivityComments" width="75%" Runat="server">
    <HeaderStyle BackColor="LightGrey" />
    <Columns>
    <asp:TemplateColumn>
    <HeaderTemplate>
    Date
    </HeaderTemplate>
    <ItemTemplate>
    <%#

    DataBinder.Eval(Container, "DataItem.CommDate") %>
    </ItemTemplate>
    </asp:TemplateColumn>
    <asp:TemplateColumn>
    <HeaderTemplate>
    Comments
    </HeaderTemplate>
    <ItemTemplate>
    <%#

    DataBinder.Eval(Container, "DataItem.Comments") %>
    </ItemTemplate>
    <EditItemTemplate>
    <asp:TextBox

    ID="txtComments" Rows="4" Runat="server" />
    </EditItemTemplate>
    </asp:TemplateColumn>
    </Columns>
    </asp:DataGrid>
    </td>
    </tr>
    </ItemTemplate>
    </asp:repeater>
    </table>
    </form>
    </body>
    </HTML>

    Imports Patio.PCMS.Library
    Imports Patio.EAF

    Public Class JobTracking
    Inherits System.Web.UI.Page

    #Region " Web Form Designer Generated Code "

    'This call is required by the Web Form Designer.
    <System.Diagnostics.DebuggerStepThrough()> Private Sub
    InitializeComponent()

    End Sub
    Protected WithEvents dgContracts As System.Web.UI.WebControls.DataGrid
    Protected WithEvents rptrJobActivities As
    System.Web.UI.WebControls.Repeater

    'NOTE: The following placeholder declaration is required by the Web Form
    Designer.
    'Do not delete or move it.
    Private designerPlaceholderDeclaration As System.Object

    Private Sub Page_Init(ByVal sender As System.Object, ByVal e As
    System.EventArgs) Handles MyBase.Init
    'CODEGEN: This method call is required by the Web Form Designer
    'Do not modify it using the code editor.
    InitializeComponent()
    End Sub

    #End Region

    Protected ReadOnly Property CustomerId() As Guid
    Get
    Return New Guid(Request.QueryString("CustomerID"))
    End Get
    End Property

    Protected ReadOnly Property LeadId() As Guid
    Get
    Return New Guid(Request.QueryString("LeadID"))
    End Get
    End Property

    Protected ReadOnly Property Customer() As Customer
    Get
    Return CType(Session(CustomerId.ToString), Customer)
    End Get
    End Property

    Protected ReadOnly Property Lead() As Lead
    Get
    Return CType(Customer.Leads(LeadId), Lead)
    End Get
    End Property

    Protected ReadOnly Property Contracts() As ContractCollection
    Get
    Return Lead.Contracts
    End Get
    End Property

    Protected Property SelectedContractId() As Guid
    Get
    If Not Session("SelectedContractId") Is Nothing Then
    Return New Guid(CType(Session("SelectedContractId"), String))
    End If
    End Get
    Set(ByVal Value As Guid)
    Session("SelectedContractId") = Value
    End Set
    End Property

    Protected ReadOnly Property JobActivities() As JobActivityCollection
    Get
    Try
    Return Contracts(SelectedContractId).Job.JobActivities
    Catch ex As Exception
    '
    End Try

    End Get
    End Property

    Protected ReadOnly Property JobActivities(ByVal ContractId As Guid) As
    JobActivityCollection
    Get
    Try
    Return Contracts(ContractId).Job.JobActivities
    Catch ex As Exception
    '
    End Try
    End Get
    End Property

    Protected Property SelectedJobActivityId() As Guid
    Get
    If Not CType(Session("SelectedJobActivityId"), String) Is Nothing Then
    Return New Guid(CType(Session("SelectedJobActivityId"), String))
    End If
    End Get
    Set(ByVal Value As Guid)
    Session("SelectedJobActivityId") = Value.ToString
    End Set
    End Property

    Protected ReadOnly Property JobActivityInstallers() As
    JobActivityInstallerCollection
    Get
    Return JobActivityInstallers(SelectedJobActivityId)
    End Get
    End Property

    Protected ReadOnly Property JobActivityInstallers(ByVal JobActivityId As
    Guid) As JobActivityInstallerCollection
    Get
    Return JobActivities()(JobActivityId).Installers
    End Get
    End Property

    Protected ReadOnly Property InstallerWorkers() As ReadOnlyWorkerCollection
    Get
    Return
    ReadOnlyWorkerCollection.GetReadOnlyWorkerCollection(Customer.BusinessUnit.BusinessUnit,
    True)
    End Get
    End Property

    Protected ReadOnly Property Comments() As CommentCollection
    Get
    Return
    CommentCollection.GetCommentCollection(ReadOnlyCommentType.GetReadOnlyCommentType("X"),
    Me.SelectedJobActivityId, CommentCollection.UserFlagStateEnum.All)
    End Get
    End Property

    'Private Sub BindJobActivityInstallersGrid(ByVal dgInstallers As DataGrid,
    ByVal JobActivityId As Guid)
    ' dgInstallers.DataSource = JobActivityInstallers(JobActivityId)
    ' dgInstallers.DataBind()
    'End Sub

    'Private Sub BindJobActivityInstallersGrid(ByVal dgInstallers As DataGrid)
    ' dgInstallers.DataSource = JobActivityInstallers()
    ' dgInstallers.DataBind()
    'End Sub

    Private Sub Page_Load(ByVal sender As System.Object, ByVal e As
    System.EventArgs) Handles MyBase.Load
    If CustomerId.Equals(Guid.Empty) OrElse LeadId.Equals(Guid.Empty) Then
    Response.Redirect("LeadSearch.aspx", True)
    End If

    If Not IsPostBack Then
    dgContracts.DataBind()
    End If
    End Sub

    Private Sub dgContracts_ItemCommand(ByVal source As Object, ByVal e As
    System.Web.UI.WebControls.DataGridCommandEventArgs) Handles
    dgContracts.ItemCommand
    If e.CommandName = "Select" Then
    Dim itm As Contract = Contracts(e.Item.ItemIndex)

    If Not itm Is Nothing Then
    Session("SelectedContractId") = itm.ContractId.ToString

    JobActivities.SortBySequence(SortConstants.SortAscending)

    rptrJobActivities.DataSource = JobActivities
    rptrJobActivities.DataBind()
    End If
    End If
    End Sub

    Private Sub rptrJobActivities_ItemCreated(ByVal sender As Object, ByVal e
    As System.Web.UI.WebControls.RepeaterItemEventArgs) Handles
    rptrJobActivities.ItemCreated
    Dim itm As JobActivity = JobActivities()(e.Item.ItemIndex)

    If Not itm Is Nothing Then
    Dim dgInstallers As DataGrid =
    CType(e.Item.FindControl("dgJobActivityInstallers"), DataGrid)
    Dim dbComments As DataGrid =
    CType(e.Item.FindControl("dgJobActivityComments"), DataGrid)

    dgInstallers.DataSource = JobActivityInstallers(itm.JobActivityId)
    dgInstallers.DataBind()

    AddHandler dgInstallers.EditCommand, AddressOf
    dgJobActivityInstallers_EditCommand
    AddHandler dgInstallers.UpdateCommand, AddressOf
    dgJobActivityInstallers_UpdateCommand
    AddHandler dgInstallers.CancelCommand, AddressOf
    dgJobActivityInstallers_CancelCommand

    dbComments.DataSource = Me.Comments
    dbComments.DataBind()
    End If
    End Sub

    Protected Sub btnAddInstaller_Click(ByVal sender As Object, ByVal e As
    EventArgs)
    Dim btn As Button = CType(sender, Button)
    Dim ri As RepeaterItem = CType(btn.Parent, RepeaterItem)
    Dim ddl As DropDownList = CType(ri.FindControl("ddlInstallerWorkers"),
    DropDownList)
    Dim dgInstallers As DataGrid =
    CType(ri.FindControl("dgJobActivityInstallers"), DataGrid)

    SelectedJobActivityId =
    JobActivities(SelectedContractId)(ri.ItemIndex).JobActivityId

    Dim itm As ReadOnlyWorker = InstallerWorkers(ddl.SelectedIndex)

    If Not itm Is Nothing Then
    If Not JobActivityInstallers Is Nothing Then
    If Not JobActivityInstallers.Contains(itm.WorkerId) Then
    JobActivityInstallers.Add(itm.WorkerId)
    'dgInstallers.EditItemIndex = -1

    dgInstallers.DataSource = JobActivityInstallers()
    dgInstallers.DataBind()

    End If
    End If
    End If
    End Sub

    Protected Sub dgJobActivityInstallers_EditCommand(ByVal source As Object,
    ByVal e As System.Web.UI.WebControls.DataGridCommandEventArgs)
    WriteDebugMessage(HttpContext.Current, Me,
    "dgJobActivityInstallers.EditCommand")
    Dim dgInstallers As DataGrid = CType(source, DataGrid)

    dgInstallers.EditItemIndex = e.Item.ItemIndex

    'dgInstallers.DataSource = JobActivityInstallers()
    dgInstallers.DataBind()

    WriteDebugMessage(HttpContext.Current, Me,
    "dgJobActivityInstallers.EditCommand " & dgInstallers.EditItemIndex)
    End Sub

    Protected Sub dgJobActivityInstallers_CancelCommand(ByVal source As
    Object, ByVal e As System.Web.UI.WebControls.DataGridCommandEventArgs)
    WriteDebugMessage(HttpContext.Current, Me,
    "dgJobActivityInstallers.CancelCommand")
    Dim dgInstallers As DataGrid = CType(source, DataGrid)

    dgInstallers.EditItemIndex = -1

    'dgInstallers.DataSource = JobActivityInstallers()
    dgInstallers.DataBind()
    End Sub

    Protected Sub dgJobActivityInstallers_UpdateCommand(ByVal source As
    Object, ByVal e As System.Web.UI.WebControls.DataGridCommandEventArgs)
    WriteDebugMessage(HttpContext.Current, Me,
    "dgJobActivityInstallers.UpdateCommand")
    Dim dgInstallers As DataGrid = CType(source, DataGrid)

    dgInstallers.EditItemIndex = -1

    'dgInstallers.DataSource = JobActivityInstallers()
    dgInstallers.DataBind()
    End Sub

    End Class
    Richard Ryerson, Jan 28, 2004
    #1
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