ASP.NET Tutorial/Data Binding/BoundField

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Версия от 11:58, 26 мая 2010; Admin (обсуждение | вклад) (1 версия)
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Adding the ReadOnly attribute to a BoundField

<!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"
             AutoGenerateEditButton="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:BoundField ReadOnly="True" HeaderText="CustomerID" DataField="CustomerID"
                     SortExpression="CustomerID" Visible="False"></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>


Set asp:BoundField for GridView

<%@ 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 runat="server">
    <title>Untitled Page</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    <asp:GridView ID="GridView2" 
                  runat="server" 
                  DataSourceID="sourceProducts"
                  AutoGenerateColumns="False" 
                  DataKeyNames="ProductID">           
        <Columns>
          <asp:BoundField DataField="ProductID" HeaderText="ID" ReadOnly="True" />
          <asp:BoundField DataField="ProductName" HeaderText="Product Name"/>
          <asp:BoundField DataField="UnitPrice" HeaderText="Price" />
          <asp:CommandField ShowEditButton="True" />
        </Columns>
    </asp:GridView>
    <asp:SqlDataSource id="sourceProducts" 
                       runat="server" 
                       SelectCommand="SELECT ProductID, ProductName, UnitPrice FROM Products" 
                       ConnectionString="<%$ ConnectionStrings:Northwind %>"
                       UpdateCommand="UPDATE Products SET ProductName=@ProductName, UnitPrice=CONVERT(money,@UnitPrice) WHERE ProductID=@ProductID">
    </asp:SqlDataSource>
    </div>
    </form>
</body>
</html>
File: Web.config
<?xml version="1.0"?>
<configuration>
  <connectionStrings>
    <add name="Northwind" connectionString="Data Source=localhost\SQLEXPRESS;Initial Catalog=Northwind;Integrated Security=SSPI"/>
  </connectionStrings>
</configuration>


SqlDataSource with Insert and Update parameters

<%@ Page Language="C#" AutoEventWireup="true" %>
<!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">
        &nbsp;
        <div>
            <asp:GridView ID="GridView1" 
                          runat="server" 
                          AutoGenerateColumns="False" 
                          DataKeyNames="ProductID"
                          DataSourceID="SqlDataSource1" 
                          EmptyDataText="There are no data records to display.">
                <Columns>
                    <asp:BoundField DataField="ProductID" HeaderText="ProductID" ReadOnly="True" SortExpression="ProductID" />
                    <asp:BoundField DataField="ProductName" HeaderText="ProductName" SortExpression="ProductName" />
                    <asp:BoundField DataField="SupplierID" HeaderText="SupplierID" SortExpression="SupplierID" />
                    <asp:BoundField DataField="CategoryID" HeaderText="CategoryID" SortExpression="CategoryID" />
                    <asp:BoundField DataField="QuantityPerUnit" HeaderText="QuantityPerUnit" SortExpression="QuantityPerUnit" />
                    <asp:BoundField DataField="UnitPrice" HeaderText="UnitPrice" SortExpression="UnitPrice" />
                    <asp:BoundField DataField="UnitsInStock" HeaderText="UnitsInStock" SortExpression="UnitsInStock" />
                    <asp:BoundField DataField="UnitsOnOrder" HeaderText="UnitsOnOrder" SortExpression="UnitsOnOrder" />
                    <asp:BoundField DataField="ReorderLevel" HeaderText="ReorderLevel" SortExpression="ReorderLevel" />
                    <asp:CheckBoxField DataField="Discontinued" HeaderText="Discontinued" SortExpression="Discontinued" />
                </Columns>
            </asp:GridView>
            <asp:SqlDataSource ID="SqlDataSource1" 
                               runat="server" 
                               ConnectionString="<%$ ConnectionStrings:NorthwindConnectionString %>"
                DeleteCommand="DELETE FROM [Products] WHERE [ProductID] = @ProductID" InsertCommand="INSERT INTO [Products] ([ProductName], [SupplierID], [CategoryID], [QuantityPerUnit], [UnitPrice], [UnitsInStock], [UnitsOnOrder], [ReorderLevel], [Discontinued]) VALUES (@ProductName, @SupplierID, @CategoryID, @QuantityPerUnit, @UnitPrice, @UnitsInStock, @UnitsOnOrder, @ReorderLevel, @Discontinued)"
                ProviderName="<%$ ConnectionStrings:NorthwindConnectionString.ProviderName %>"
                SelectCommand="SELECT [ProductID], [ProductName], [SupplierID], [CategoryID], [QuantityPerUnit], [UnitPrice], [UnitsInStock], [UnitsOnOrder], [ReorderLevel], [Discontinued] FROM [Products]"
                UpdateCommand="UPDATE [Products] SET [ProductName] = @ProductName, [SupplierID] = @SupplierID, [CategoryID] = @CategoryID, [QuantityPerUnit] = @QuantityPerUnit, [UnitPrice] = @UnitPrice, [UnitsInStock] = @UnitsInStock, [UnitsOnOrder] = @UnitsOnOrder, [ReorderLevel] = @ReorderLevel, [Discontinued] = @Discontinued WHERE [ProductID] = @ProductID">
                <InsertParameters>
                    <asp:Parameter Name="ProductName" Type="String" />
                    <asp:Parameter Name="SupplierID" Type="Int32" />
                    <asp:Parameter Name="CategoryID" Type="Int32" />
                    <asp:Parameter Name="QuantityPerUnit" Type="String" />
                    <asp:Parameter Name="UnitPrice" Type="Decimal" />
                    <asp:Parameter Name="UnitsInStock" Type="Int16" />
                    <asp:Parameter Name="UnitsOnOrder" Type="Int16" />
                    <asp:Parameter Name="ReorderLevel" Type="Int16" />
                    <asp:Parameter Name="Discontinued" Type="Boolean" />
                </InsertParameters>
                <UpdateParameters>
                    <asp:Parameter Name="ProductName" Type="String" />
                    <asp:Parameter Name="SupplierID" Type="Int32" />
                    <asp:Parameter Name="CategoryID" Type="Int32" />
                    <asp:Parameter Name="QuantityPerUnit" Type="String" />
                    <asp:Parameter Name="UnitPrice" Type="Decimal" />
                    <asp:Parameter Name="UnitsInStock" Type="Int16" />
                    <asp:Parameter Name="UnitsOnOrder" Type="Int16" />
                    <asp:Parameter Name="ReorderLevel" Type="Int16" />
                    <asp:Parameter Name="Discontinued" Type="Boolean" />
                    <asp:Parameter Name="ProductID" Type="Int32" />
                </UpdateParameters>
                <DeleteParameters>
                    <asp:Parameter Name="ProductID" Type="Int32" />
                </DeleteParameters>
            </asp:SqlDataSource>
    
    </div>
    </form>
</body>
</html>
File: Web.config
<?xml version="1.0"?>
<configuration>
  <appSettings/>
  <connectionStrings>
  <add name="NorthwindConnectionString" connectionString="Data Source=.\SQLEXPRESS;Initial Catalog=Northwind;Integrated Security=True"
   providerName="System.Data.SqlClient" />
 </connectionStrings>
  <system.web>
    <compilation debug="true"/>
    <authentication mode="Windows"/>
  </system.web>
</configuration>


Using BoundFields with the GridView control

The most important three properties of the BoundField class are 
the DataField, DataFormatString, and HeaderText properties. 
<%@ 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 BoundField</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    <asp:GridView
        id="grdProducts"
        DataSourceID="srcProducts"
        AutoGenerateColumns="false"
        Runat="server">
        <Columns>
        <asp:BoundField
            DataField="Title"
            HeaderText="Product Title" />
        <asp:BoundField
            DataField="Director"
            HeaderText="Product Director" />
        <asp:BoundField
            DataField="Totals"
            DataFormatString="{0:c}"
            HtmlEncode="false"
            HeaderText="Box Office Totals" />
        </Columns>
    </asp:GridView>
    <asp:SqlDataSource
        id="srcProducts"
        ConnectionString="<%$ ConnectionStrings:Products %>"
        SelectCommand="SELECT * FROM Products"
        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/BoundField&oldid=3144»