ASP.NET Tutorial/Data Binding/CommandField — различия между версиями

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Версия 15:30, 26 мая 2010

Adding edit functionality using a CommandField control

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Untitled Page</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:GridView ID="GridView1" Runat="server" DataSourceID="SqlDataSource1"
             DataKeyNames="CustomerID" AutoGenerateColumns="False"
             AllowSorting="True" AllowPaging="True">
             <PagerStyle HorizontalAlign="Center"></PagerStyle>
             <PagerSettings Position="TopAndBottom" 
                  FirstPageText="Go to the first page" 
                  LastPageText="Go to the last page" Mode="NextPreviousFirstLast">
             </PagerSettings>
            <Columns>
                <asp:CommandField ShowHeader="True" HeaderText="Command"
                     ShowEditButton="True"></asp:CommandField>
                <asp:BoundField ReadOnly="True" HeaderText="CustomerID"
                     DataField="CustomerID"
                     SortExpression="CustomerID"></asp:BoundField>
                <asp:HyperLinkField HeaderText="CompanyName"
                    DataNavigateUrlFields="CustomerID,Country" SortExpression="CompanyName"
                    DataNavigateUrlFormatString=
                        "http://www.foo.ru/Customer.aspx?id={0}&country={1}"
                    DataTextField="CompanyName">
                </asp:HyperLinkField>
                <asp:BoundField HeaderText="ContactName" DataField="ContactName"
                     SortExpression="ContactName"></asp:BoundField>
                <asp:BoundField HeaderText="ContactTitle" DataField="ContactTitle"
                     SortExpression="ContactTitle"></asp:BoundField>
                <asp:BoundField HeaderText="Address" DataField="Address"
                     SortExpression="Address"></asp:BoundField>
                <asp:BoundField HeaderText="City" DataField="City"
                     SortExpression="City"></asp:BoundField>
                <asp:BoundField HeaderText="Region" NullDisplayText="N/A"
                     DataField="Region" SortExpression="Region"></asp:BoundField>
                <asp:BoundField HeaderText="PostalCode" DataField="PostalCode"
                     SortExpression="PostalCode"></asp:BoundField>
                <asp:BoundField HeaderText="Country" DataField="Country" 
                     SortExpression="Country"></asp:BoundField>
                <asp:BoundField HeaderText="Phone" DataField="Phone" 
                     SortExpression="Phone"></asp:BoundField>
                <asp:BoundField HeaderText="Fax" DataField="Fax" 
                     SortExpression="Fax"></asp:BoundField>
                     
            </Columns>
        </asp:GridView>
        <asp:SqlDataSource ID="SqlDataSource1" Runat="server"
             SelectCommand="SELECT * FROM [Customers]"
             ConnectionString="<%$ ConnectionStrings:AppConnectionString1 %>"
             DataSourceMode="DataSet"
             UpdateCommand="UPDATE [Customers] SET [CompanyName] = @CompanyName,
                  [ContactName] = @ContactName, [ContactTitle] = @ContactTitle,
                  [Address] = @Address, [City] = @City, [Region] = @Region, 
                  [PostalCode] = @PostalCode, [Country] = @Country, [Phone] = @Phone,
                  [Fax] = @Fax WHERE [CustomerID] = @original_CustomerID">
             <UpdateParameters>
                 <asp:Parameter Type="String" Name="CompanyName"></asp:Parameter>
                 <asp:Parameter Type="String" Name="ContactName"></asp:Parameter>
                 <asp:Parameter Type="String" Name="ContactTitle"></asp:Parameter>
                 <asp:Parameter Type="String" Name="Address"></asp:Parameter>
                 <asp:Parameter Type="String" Name="City"></asp:Parameter>
                 <asp:Parameter Type="String" Name="Region"></asp:Parameter>
                 <asp:Parameter Type="String" Name="PostalCode"></asp:Parameter>
                 <asp:Parameter Type="String" Name="Country"></asp:Parameter>
                 <asp:Parameter Type="String" Name="Phone"></asp:Parameter>
                 <asp:Parameter Type="String" Name="Fax"></asp:Parameter>
                 <asp:Parameter Type="String" Name="CustomerID"></asp:Parameter>
             </UpdateParameters>
        </asp:SqlDataSource>     
    </div>
    </form>
</body>
</html>
File: Web.config
<configuration>
  <appSettings/>
  <connectionStrings>
        <add name="AppConnectionString1" 
             connectionString="Data Source=localhost\SQLEXPRESS;Initial Catalog=Northwind;Integrated Security=True"
             providerName="System.Data.SqlClient" />
    </connectionStrings>
  <system.web>
    <compilation debug="true" strict="false" explicit="true">
      <codeSubDirectories>
        <add directoryName="VB"></add>
        <add directoryName="CS"></add>
      </codeSubDirectories>
    </compilation>
    <pages>
      <namespaces>
        <clear/>
        <add namespace="System"/>
        <add namespace="System.Collections"/>
        <add namespace="System.Collections.Specialized"/>
        <add namespace="System.Configuration"/>
        <add namespace="System.Text"/>
        <add namespace="System.Text.RegularExpressions"/>
        <add namespace="System.Web"/>
        <add namespace="System.Web.Caching"/>
        <add namespace="System.Web.SessionState"/>
        <add namespace="System.Web.Security"/>
        <add namespace="System.Web.Profile"/>
        <add namespace="System.Web.UI"/>
        <add namespace="System.Web.UI.WebControls"/>
        <add namespace="System.Web.UI.WebControls.WebParts"/>
        <add namespace="System.Web.UI.HtmlControls"/>
      </namespaces>
    </pages>
    <authentication mode="Windows"></authentication>
    <identity impersonate="true"/>
  </system.web>
</configuration>


Use a CommandField to customize the appearance of the Edit, Delete, Update, Cancel, and Select buttons

<%@ Page Language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
  "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
    <title>Show CommandField</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    <asp:GridView
        id="grdProducts"
        DataSourceID="srcProducts"
        DataKeyNames="Id"
        AutoGenerateColumns="false"
        Runat="server">
        <Columns>
        <asp:CommandField
            ButtonType="Image"
            ShowEditButton="true"
            EditText="Edit Product"
            UpdateText="Update Product"
            ShowCancelButton="true"
            CancelText="Cancel Edit"
            ShowDeleteButton="true"
            DeleteText="Delete Product"/>
        <asp:BoundField
            DataField="Title"
            HeaderText="Product Title" />
        <asp:BoundField
            DataField="Director"
            HeaderText="Product Director" />
        </Columns>
    </asp:GridView>
    <asp:SqlDataSource
        id="srcProducts"
        ConnectionString="<%$ ConnectionStrings:Products %>"
        SelectCommand="SELECT Id,Title,Director FROM Products"
        UpdateCommand="UPDATE Products SET Title=@Title, 
                                         Director=@Director
                                         WHERE Id=@Id" 
        DeleteCommand="DELETE Products WHERE Id=@Id"
        Runat="server" />
    </div>
    </form>
</body>
</html>
File: Web.config
<configuration>
  <connectionStrings>
    <add name="Products" 
         connectionString="Data Source=.\SQLEXPRESS;
         AttachDbFilename=|DataDirectory|MyDatabase.mdf;Integrated Security=True;User Instance=True" />
  </connectionStrings>
</configuration>
Источник — «http://nfex.ru/index.php?title=ASP.NET_Tutorial/Data_Binding/CommandField&oldid=3174»