SqlDataSourceMode 列舉

定義

指定 SqlDataSourceAccessDataSource 控制項取資料做為 IDataReaderDataSetSpecifies whether a SqlDataSource or AccessDataSource control retrieves data as a IDataReader or DataSet.

public enum class SqlDataSourceMode
public enum SqlDataSourceMode
type SqlDataSourceMode = 
Public Enum SqlDataSourceMode
繼承
SqlDataSourceMode

欄位

DataReader 0

從基礎資料儲存區中擷取資料做為 IDataReaderRetrieves data from the underlying data storage as an IDataReader

DataSet 1

從基礎資料儲存區中擷取資料至 DataSet 結構中。Retrieves data from the underlying data storage into a DataSet structure.

範例

下列範例示範如何 DataSourceMode SqlDataSource 在將 DataReader SQL Server 資料庫中的簡單專案清單取出至控制項時,將控制項的屬性設定為 ListBoxThe following example demonstrates how to set the DataSourceMode property of a SqlDataSource control to DataReader when retrieving a simple list of items from a SQL Server database into a ListBox control.

<%@ Page language="C#" %>

<!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>ASP.NET Example</title>
</head>
<body>
    <form id="form1" runat="server">
      <asp:SqlDataSource
          id="SqlDataSource1"
          runat="server"
          DataSourceMode="DataReader"
          ConnectionString="<%$ ConnectionStrings:MyNorthwind%>"
          SelectCommand="SELECT LastName FROM Employees">
      </asp:SqlDataSource>

      <asp:ListBox
          id="ListBox1"
          runat="server"
          DataTextField="LastName"
          DataSourceID="SqlDataSource1">
      </asp:ListBox>

    </form>
  </body>
</html>
<%@ Page language="VB" %>

<!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>ASP.NET Example</title>
</head>
<body>
    <form id="form1" runat="server">
      <asp:SqlDataSource
          id="SqlDataSource1"
          runat="server"
          DataSourceMode="DataReader"
          ConnectionString="<%$ ConnectionStrings:MyNorthwind%>"
          SelectCommand="SELECT LastName FROM Employees">
      </asp:SqlDataSource>

      <asp:ListBox
          id="ListBox1"
          runat="server"
          DataTextField="LastName"
          DataSourceID="SqlDataSource1">
      </asp:ListBox>

    </form>
  </body>
</html>

下列範例示範如何 SqlDataSource.DataSourceMode DataSet 在將一組資料取出至已啟用排序的控制項時,將屬性設定為 GridViewThe following example demonstrates how to set the SqlDataSource.DataSourceMode property to DataSet when retrieving a set of data into a GridView control that has sorting enabled.

<!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>ASP.NET Example</title>
</head>
<body>
    <form id="form1" runat="server">

      <asp:SqlDataSource
          id="SqlDataSource1"
          runat="server"
          DataSourceMode="DataSet"
          ConnectionString="<%$ ConnectionStrings:MyNorthwind%>"
          SelectCommand="SELECT FirstName, LastName, Title FROM Employees">
      </asp:SqlDataSource>

      <asp:GridView
          id="GridView1"
          runat="server"
          AllowSorting="True"
          DataSourceID="SqlDataSource1">
      </asp:GridView>

    </form>
  </body>
</html>
<!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>ASP.NET Example</title>
</head>
<body>
    <form id="form1" runat="server">

      <asp:SqlDataSource
          id="SqlDataSource1"
          runat="server"
          DataSourceMode="DataSet"
          ConnectionString="<%$ ConnectionStrings:MyNorthwind%>"
          SelectCommand="SELECT FirstName, LastName, Title FROM Employees">
      </asp:SqlDataSource>

      <asp:GridView
          id="GridView1"
          runat="server"
          AllowSorting="True"
          DataSourceID="SqlDataSource1">
      </asp:GridView>

    </form>
  </body>
</html>

備註

SqlDataSourceMode和控制項使用列舉, SqlDataSource AccessDataSource 描述呼叫方法時,資料來源控制項所使用的資料抓取模式 SelectThe SqlDataSourceMode enumeration is used by the SqlDataSource and AccessDataSource controls to describe the data retrieval mode that the data source control uses when the Select method is called. DataSourceMode 屬性設定為時 DataSet ,資料會載入至結構中 DataSetWhen the DataSourceMode property is set to DataSet, data is loaded into a DataSet structure. 這會啟用使用者介面控制項的案例,例如 GridView 供應專案排序和分頁功能。This enables scenarios where user interface controls such as GridView offer sorting and paging capabilities. DataSourceMode 屬性設定為時 DataReader ,資料會由 IDataReader 物件(唯讀、順向資料指標)抓取。When the DataSourceMode property is set to DataReader, data is retrieved by an IDataReader object, which is a read-only, forward-only cursor.

SqlDataSourceMode列舉僅用來描述命令如何抓取 Select 資料; 它不會影響控制項所執行的其他作業 SqlDataSource ,例如 InsertUpdateDeleteThe SqlDataSourceMode enumeration is only used to describe how the Select command retrieves data; it has no effect on other operations the SqlDataSource control performs, such as Insert, Update, or Delete.

適用於

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