MVC :: 3 Master / Detail View Inserts New Detail Records Instead Of Updating Existing
Feb 6, 2011
article on binding to a list and I've got that working fine on one view. But what I'm stuck when doing it off a master record. Everything seems to work except that when I look in the database the detail records previous associated with the current master have their Foriegn key to master set to Null and a new set of detail records have been inserted. I've got a really simple form for this object
[Code]....
The form collection comes back with the expected prefixes:
[Code]....
And the Controller.UpdateModel(master) binds all the properties correctly. But when I call dbContext.SaveChanges it issues the follow sql from sql profiler (psuedo code)
[Code]....
I've got a work around that works but it's pretty hackish and I'm currently not matching up the keys so it's dependent on everything coming back in the right order. Plus I've got to include all the fields that I want updated.
[Code]....
I thought that entity framework's code first was the culprite but I've unit test that and it works fine. I've got a feeling that UpdateModel is somehow removing and re-adding the children. Has anyone else got this to work? Of course, I could throw in the towel and parse the indexed field names myself, but I'm so close!
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ViewModels
[Code]....
Database
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public class Author
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using sql server 2005
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</DISPLAY>
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[Code]....
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[Code]....
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Feb 1, 2011
i wanna wrtite a model for master - detail tables. using mvc and entity framework.
for example maste table is ORders, detail table is ORderDetails.
ORders colunms (OrderID, Date, Employe..)
ORders
OrderID Date ....
1 1/1/10
2 1/2/10
OrderDetail columns (OrderID, porductID, Amount)
ORderID ProductID Amount
1 1 10
1 2 8
1 3 7
i am creating a model for this structure
Puclis class Model{
public OrderID, Date, Employe;
List<OrderDetail> list ; // this is another class OrderDetails...
}
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but editing the order and details model is difficult.
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I 'm writing a gridview. When you click a image button in the gridview, it will popup a panel to show detail. But it is not working at the moment.
<%@ Page Language="VB" AutoEventWireup="false" CodeFile="test67.aspx.vb" Inherits="test67" %>
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="cc1" %>
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<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<link href="css/style_ie.css" rel="stylesheet" type="text/css" />
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<asp:SqlDataSource ID="SqlDataSource1" runat="server"
ConnectionString="<%$ ConnectionStrings:NorthwindConnectionString %>"
SelectCommand="SELECT CustomerID, CompanyName, ContactName, ContactTitle, Address, City, Region, PostalCode, Country, Phone, Fax FROM Customers">
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<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False"
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<asp:BoundField DataField="CompanyName" HeaderText="CompanyName"
SortExpression="CompanyName" />
<asp:BoundField DataField="ContactName" HeaderText="ContactName"
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<asp:ImageButton ID="ImageButton1" runat="server" CausesValidation="False" CommandName="Select"
ImageUrl="Images/details_icon.gif" ToolTip="Show Details"/>
<asp:Panel ID="Panel1" runat="server" BackColor="#FFFFFF">
<asp:UpdatePanel ID="UpdatePanel2" runat="server" >
<ContentTemplate>
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<asp:ControlParameter ControlID="GridView1" Name="CustomerID" PropertyName="SelectedValue"
Type="String" />
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<asp:Parameter Name="CompanyName" Type="String" />
<asp:Parameter Name="ContactName" Type="String" />
<asp:Parameter Name="ContactTitle" Type="String" />
<asp:Parameter Name="Address" Type="String" />
<asp:Parameter Name="CustomerID" Type="String" />
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<CommandRowStyle BackColor="#dfe4ec" ForeColor="#003975" HorizontalAlign="Left" Font-Bold="True"></CommandRowStyle>
<EditRowStyle BorderStyle="None"></EditRowStyle>
<RowStyle BackColor="#FFFFFF"></RowStyle>
<PagerStyle BackColor="#666666" ForeColor="White" HorizontalAlign="Center"></PagerStyle>
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<asp:BoundField DataField="ContactName" HeaderText="ContactName" SortExpression="ContactName" />
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<asp:BoundField DataField="Address" HeaderText="Address" SortExpression="Address" />
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<cc1:PopupControlExtender ID="PopupControlExtender1" runat="server" TargetControlID="ImageButton1"
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Position="Right"
OffsetX="0"
OffsetY="0"
>
</cc1:PopupControlExtender>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
</ContentTemplate>
</asp:UpdatePanel>
</div>
</form>
</body>
</html>
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Jan 20, 2010
I am building treeview using asp.net 2.0/3.5 from master detail table.
ParentTable Value ---ChildTable Value ---GrandChildTable1 Node ---GrandChildTable1 Value ---GrandChildTable2 Node ---GrandChildTable1 Value
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[Code]....
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Sep 22, 2010
I have a single web page with master detail form/input layout. Currently the form works in a way like
User opens the page containing both master/detail data entry controls and enters the master information (The details save button is disabled)When he saves the master information, the save master button gets disabled and save details is enabled User continues to enter multiple details which get populated in a gridview at the bottom of page All works well Problem is that, the master part contains a lot of data entry controls (drop down lists gridviews etc)
How do I facilitate the user much more then the current layout? Should he be redirected to a new page after he enters the master record ? How can I improve on this?
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Mar 16, 2010
I have a current scenario where I have a master detail report for a single certain record in table in format
Record 1
detail 1
detail 2
detail n
Currently I have 2 details section with Record data in 1 section and a subreport in other section (details)
Now I want to have report for all records in table like
Record 1
detail 1
detail 2
detail n
Record 2
detail 1
detail 2
detail n
and so on.
How do I structure my report to have master details for all the records in the table ?
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