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Get Last Identity from table ASP.NET

Posted on 2008-10-16
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Last Modified: 2013-12-17
Hi,
    I have a web form as shown below. I wish to modify the INSERT statement to include a IDENT_CURRENT('Employees') statement. I wish to store this in an 'Output' parameter & then retrieve its value in the ItemInserted event handler in the code behind file (C#). Any help appreciated.

Thanks
Paul.

<%@ Page Language="C#" AutoEventWireup="true"  CodeFile="Default.aspx.cs" Inherits="_Default" %>

<!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 runat="server">
    <title>Untitled Page</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:DummyDBConnectionString %>"
            DeleteCommand="DELETE FROM [Employees] WHERE [Employeeid] = @Employeeid"
//Modify insert here to include IDENT_CURRENT('Employees')
InsertCommand="INSERT INTO [Employees] ([LastName], [FirstName]) VALUES (@LastName, @FirstName)"
            SelectCommand="SELECT [LastName], [FirstName], [Employeeid] FROM [Employees]"
            UpdateCommand="UPDATE [Employees] SET [LastName] = @LastName, [FirstName] = @FirstName WHERE [Employeeid] = @Employeeid">
            <DeleteParameters>
                <asp:Parameter Name="Employeeid" Type="Int32" />
            </DeleteParameters>
            <UpdateParameters>
                <asp:Parameter Name="LastName" Type="String" />
                <asp:Parameter Name="FirstName" Type="String" />
                <asp:Parameter Name="Employeeid" Type="Int32" />
            </UpdateParameters>
            <InsertParameters>
                <asp:Parameter Name="LastName" Type="String" />
                <asp:Parameter Name="FirstName" Type="String" />
//Add a parameter here to store IDENT_CURRENT('Employee') last value
            </InsertParameters>
        </asp:SqlDataSource>
        <asp:DetailsView ID="DetailsView1" runat="server" AllowPaging="True" AutoGenerateRows="False"
            DataKeyNames="Employeeid" DataSourceID="SqlDataSource1" Height="50px" Width="125px">
            <Fields>
                <asp:BoundField DataField="LastName" HeaderText="LastName" SortExpression="LastName" />
                <asp:BoundField DataField="FirstName" HeaderText="FirstName" SortExpression="FirstName" />
                <asp:BoundField DataField="Employeeid" HeaderText="Employeeid" InsertVisible="False"
                    ReadOnly="True" SortExpression="Employeeid" />
                <asp:CommandField ShowDeleteButton="True" ShowEditButton="True" ShowInsertButton="True" />
            </Fields>
        </asp:DetailsView>
   
    </div>
    </form>
</body>
</html>
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Question by:pr_wainwright
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by:Anurag Thakur
ID: 22730445
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HeoQue earned 125 total points
ID: 22732737
please read the following article , it addresses this issue :http://aspnet.4guysfromrolla.com/articles/100108-1.aspx
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