GridView.DataKey

hello every body my name is furqan ahmed and i am new to asp.net and so to .net controls can any tell me what the following code is saying and what does datakey means thanxxx

i am waiting for ur reply i shall be vey thankfull to ya

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 <%@ Page language="C#" %>
 
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"

    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<script runat="server">
 
  void CustomerDetailsView_DataBound(Object sender, EventArgs e)

  {

    // Get the DataKey object for the current record.

    DataKey key = CustomerDetailsView.DataKey;
 
    // Display the the value of the key field.

    MessageLabel.Text = "The key field value for the displayed record is " + 

      key.Value.ToString() + ".";

  }
 
</script>
 
<html  >
 
  <head runat="server">

    <title>DataKey Example</title>

</head>

<body>

    <form id="form1" runat="server">
 
      <h3>DataKey Example</h3>
 
        <asp:detailsview id="CustomerDetailsView"

          datasourceid="DetailsViewSource"

          autogeneraterows="true"

          datakeynames="CustomerID"  

          allowpaging="true"

          ondatabound="CustomerDetailsView_DataBound" 

          runat="server">
 
        </asp:detailsview>
 
        <br/>
 
        <asp:label id="MessageLabel"

          forecolor="Red"

          runat="server"/>
 
        <!-- This example uses Microsoft SQL Server and connects  -->

        <!-- to the Northwind sample database. Use an ASP.NET     -->

        <!-- expression to retrieve the connection string value   -->

        <!-- from the Web.config file.                            -->

        <asp:sqldatasource id="DetailsViewSource"

          selectcommand="Select [CustomerID], [CompanyName], [Address], [City], [PostalCode], [Country] From [Customers]"

          connectionstring="<%$ ConnectionStrings:NorthWindConnectionString%>" 

          runat="server"/>
 
      </form>

  </body>

</html>

Feb 19 '10 #1

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2860

CroCrew

564

Expert 512MB

Hello furqi,

We will be happy to help you out. But, can I ask something of you? From today going forward when asking for help and filling out the form could you please not put “hi every body” in the Question field. Next time type something in that field that sums up your question/problem.

Thanks,
CroCrew~

Feb 19 '10 #2

tlhintoq

3,525

Expert 2GB

To add on to what CroCrew said there is a FAQ that helps with writing questions and subjects in the best way possible to get the most targeted help. Please visit the Posting Guidelines for tips on how to ask questions to get the best help.

Moving on to your question "What is a DataKey?" It is the object type. That is standard syntax is C#. First the type, then the name of that instance.

Button myButton = new Button();
DataKey myDataKey = new DataKey();

Same thing. For details on how what a DataKey does and is (or any .NET object) I always recommend going to the MSDN. My favorite search method is to hit google with "MSDN {thing}" In this case going a Google for "MSDN DataKey" gets you what you need.
http://msdn.microsoft.com/en-us/libr...0).aspx?ppud=4

Feb 19 '10 #3

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