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Bug Report B207619
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ASPxGridView - Exception has been thrown by the target of an invocation

created 13 years ago

When i edit a record it's giving me an error when i press the Update button. I made sure i have the key set right so i'm not sure what's going on. here's the exception message when dubugging:
System.Reflection.TargetInvocationException occurred
  Message=Exception has been thrown by the target of an invocation.
  Source=mscorlib
  StackTrace:
       at System.RuntimeMethodHandle._InvokeMethodFast(IRuntimeMethodInfo method, Object target, Object[] arguments, SignatureStruct& sig, MethodAttributes methodAttributes, RuntimeType typeOwner)
       at System.RuntimeMethodHandle.InvokeMethodFast(IRuntimeMethodInfo method, Object target, Object[] arguments, Signature sig, MethodAttributes methodAttributes, RuntimeType typeOwner)
  InnerException: System.NullReferenceException
       Message=Object reference not set to an instance of an object.
       Source=System.Web
       StackTrace:
            at System.Web.UI.Page.get_Title()
       InnerException:

Comments (2)
MC MC
Mike Christensen 13 years ago

    Here's the ASPX code:
    <%@ Page Language="vb" AutoEventWireup="false" CodeBehind="Invoice.aspx.vb" Inherits="Application.Invoice" %>
    <%@ Register assembly="DevExpress.Web.ASPxGridView.v11.1, Version=11.1.8.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a" namespace="DevExpress.Web.ASPxGridView" tagprefix="dx" %>
    <%@ Register assembly="DevExpress.Web.ASPxEditors.v11.1, Version=11.1.8.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a" namespace="DevExpress.Web.ASPxEditors" tagprefix="dx" %>
    <%@ Register assembly="DevExpress.Web.v11.1.Linq, Version=11.1.8.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a" namespace="DevExpress.Data.Linq" tagprefix="dx" %>
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head id="Head1" runat="server">
        <title>XXX Invoice</title>
    </head>
    <body>
        <form id="form1" runat="server">
        <div>
        <table cellpadding="0" cellspacing="0"> <tr><td colspan="2" width="100%"> <!--#include file="Include\incTopNav.aspx"--></td></tr><tr><td width="170"> <!--#include file="Include\incLeftNav.aspx"--></td>
        <td width="100%" valign="top">
            <dx:ASPxGridView ID="ASPxGridViewInvoice" runat="server" AutoGenerateColumns="False"
                DataSourceID="LinqServerModeDataSource1" KeyFieldName="InvoiceID">
                <Columns>
                    <dx:GridViewCommandColumn VisibleIndex="0">
                        <EditButton Visible="True">
                        </EditButton>
                        <NewButton Visible="True">
                        </NewButton>
                        <DeleteButton Visible="True">
                        </DeleteButton>
                    </dx:GridViewCommandColumn>
                    <dx:GridViewDataTextColumn FieldName="InvoiceID" ReadOnly="True"
                        VisibleIndex="1">
                    </dx:GridViewDataTextColumn>
                    <dx:GridViewDataDateColumn FieldName="InvoiceDate" VisibleIndex="2">
                    </dx:GridViewDataDateColumn>
                    <dx:GridViewDataTextColumn FieldName="InvoiceAmount" VisibleIndex="3">
                    </dx:GridViewDataTextColumn>
                    <dx:GridViewDataTextColumn FieldName="QuoteID" VisibleIndex="4">
                    </dx:GridViewDataTextColumn>
                    <dx:GridViewDataTextColumn FieldName="Status" VisibleIndex="5">
                    </dx:GridViewDataTextColumn>
                    <dx:GridViewDataTextColumn FieldName="CustomerID" VisibleIndex="6">
                    </dx:GridViewDataTextColumn>
                    <dx:GridViewDataTextColumn FieldName="ContactName" VisibleIndex="7">
                    </dx:GridViewDataTextColumn>
                    <dx:GridViewDataTextColumn FieldName="ContactEmail" VisibleIndex="8">
                    </dx:GridViewDataTextColumn>
                    <dx:GridViewDataTextColumn FieldName="CoordinatorsQuantity" VisibleIndex="9">
                    </dx:GridViewDataTextColumn>
                    <dx:GridViewDataTextColumn FieldName="DriversQuantity" VisibleIndex="10">
                    </dx:GridViewDataTextColumn>
                    <dx:GridViewDataTextColumn FieldName="E991Quantity" VisibleIndex="11">
                    </dx:GridViewDataTextColumn>
                </Columns>
                <Settings ShowFilterBar="Visible" ShowFilterRow="True" />
            </dx:ASPxGridView>
            <dx:LinqServerModeDataSource ID="LinqServerModeDataSource1" runat="server"
                ContextTypeName="Application.DataClasses1DataContext" EnableDelete="True"
                EnableInsert="True" EnableUpdate="True" TableName="Invoices">
            </dx:LinqServerModeDataSource>
            </td>
        </tr></table>
        </div>
        </form>
    </body>
    </html>

    DevExpress Support Team 13 years ago

      Hello Mike,
      I would like to note that the error message you sent is thrown on the server side. Thus, the markup does not allow us to diagnostic the cause of this issue. Please provide us with a sample working project (containing only the problematic ASPxGridView bound with any portable datasource) that illustrates the problem. We will do our best to help you.
      In addition, you can catch the exception yourself. For this, adjust VS.NET as shown below:

      1. Go to the Debug-->Exceptions dialog, check Common Language Runtime Exceptions, and check the check box in the Thrown column;
      2. Go to the Tools-->Options-->Debugging and uncheck the Enable Just My Code (Managed Only) check box.
        Thanks,
        Marion
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