AccessDataSource Web 服务器控件声明性语法
更新：2007 年 11 月
表示一个使用 Microsoft Access 数据库的数据源控件。
<asp:AccessDataSource
CacheDuration="string|Infinite"
CacheExpirationPolicy="Absolute|Sliding"
CacheKeyDependency="string"
CancelSelectOnNullParameter="True|False"
ConflictDetection="OverwriteChanges|CompareAllValues"
DataFile="uri"
DataSourceMode="DataReader|DataSet"
DeleteCommand="string"
DeleteCommandType="Text|StoredProcedure"
EnableCaching="True|False"
EnableTheming="True|False"
EnableViewState="True|False"
FilterExpression="string"
ID="string"
InsertCommand="string"
InsertCommandType="Text|StoredProcedure"
OldValuesParameterFormatString="string"
OnDataBinding="DataBinding event handler"
OnDeleted="Deleted event handler"
OnDeleting="Deleting event handler"
OnDisposed="Disposed event handler"
OnFiltering="Filtering event handler"
OnInit="Init event handler"
OnInserted="Inserted event handler"
OnInserting="Inserting event handler"
OnLoad="Load event handler"
OnPreRender="PreRender event handler"
OnSelected="Selected event handler"
OnSelecting="Selecting event handler"
OnUnload="Unload event handler"
OnUpdated="Updated event handler"
OnUpdating="Updating event handler"
runat="server"
SelectCommand="string"
SelectCommandType="Text|StoredProcedure"
SkinID="string"
SortParameterName="string"
UpdateCommand="string"
UpdateCommandType="Text|StoredProcedure"
Visible="True|False"
>
<DeleteParameters>
<asp:ControlParameter
ControlID="string"
ConvertEmptyStringToNull="True|False"
DefaultValue="string"
Direction="Input|Output|InputOutput|
ReturnValue"
Name="string"
PropertyName="string"
Size="integer"
Type="Empty|Object|DBNull|Boolean|Char|SByte|
Byte|Int16|UInt16|Int32|UInt32|Int64|UInt64|
Single|Double|Decimal|DateTime|String"
/>
<asp:CookieParameter
ConvertEmptyStringToNull="True|False"
CookieName="string"
DefaultValue="string"
Direction="Input|Output|InputOutput|
ReturnValue"
Name="string"
Size="integer"
Type="Empty|Object|DBNull|Boolean|Char|SByte|
Byte|Int16|UInt16|Int32|UInt32|Int64|UInt64|
Single|Double|Decimal|DateTime|String"
/>
<asp:FormParameter
ConvertEmptyStringToNull="True|False"
DefaultValue="string"
Direction="Input|Output|InputOutput|ReturnValue"
FormField="string"
Name="string"
Size="integer"
Type="Empty|Object|DBNull|Boolean|Char|SByte|
Byte|Int16|UInt16|Int32|UInt32|Int64|UInt64|
Single|Double|Decimal|DateTime|String"
/>
<asp:Parameter
ConvertEmptyStringToNull="True|False"
DefaultValue="string"
Direction="Input|Output|InputOutput|ReturnValue"
Name="string"
Size="integer"
Type="Empty|Object|DBNull|Boolean|Char|SByte|
Byte|Int16|UInt16|Int32|UInt32|Int64|UInt64
|Single|Double|Decimal|DateTime|String"
/>
<asp:ProfileParameter
ConvertEmptyStringToNull="True|False"
DefaultValue="string"
Direction="Input|Output|InputOutput|ReturnValue"
Name="string"
PropertyName="string"
Size="integer"
Type="Empty|Object|DBNull|Boolean|Char|SByte|
Byte|Int16|UInt16|Int32|UInt32|Int64|UInt64|
Single|Double|Decimal|DateTime|String"
/>
<asp:QueryStringParameter
ConvertEmptyStringToNull="True|False"
DefaultValue="string"
Direction="Input|Output|InputOutput|ReturnValue"
Name="string"
QueryStringField="string"
Size="integer"
Type="Empty|Object|DBNull|Boolean|Char|SByte|
Byte|Int16|UInt16|Int32|UInt32|Int64|UInt64|
Single|Double|Decimal|DateTime|String"
/>
<asp:SessionParameter
ConvertEmptyStringToNull="True|False"
DefaultValue="string"
Direction="Input|Output|InputOutput|ReturnValue"
Name="string"
SessionField="string"
Size="integer"
Type="Empty|Object|DBNull|Boolean|Char|SByte|
Byte|Int16|UInt16|Int32|UInt32|Int64|UInt64|
Single|Double|Decimal|DateTime|String"
/>
</DeleteParameters>
<FilterParameters>
<asp:ControlParameter
ControlID="string"
ConvertEmptyStringToNull="True|False"
DefaultValue="string"
Direction="Input|Output|InputOutput|ReturnValue"
Name="string"
PropertyName="string"
Size="integer"
Type="Empty|Object|DBNull|Boolean|Char|SByte|
Byte|Int16|UInt16|Int32|UInt32|Int64|UInt64|
Single|Double|Decimal|DateTime|String"
/>
<asp:CookieParameter
ConvertEmptyStringToNull="True|False"
CookieName="string"
DefaultValue="string"
Direction="Input|Output|InputOutput|ReturnValue"
Name="string"
Size="integer"
Type="Empty|Object|DBNull|Boolean|Char|SByte|
Byte|Int16|UInt16|Int32|UInt32|Int64|UInt64|
Single|Double|Decimal|DateTime|String"
/>
<asp:FormParameter
ConvertEmptyStringToNull="True|False"
DefaultValue="string"
Direction="Input|Output|InputOutput|ReturnValue"
FormField="string"
Name="string"
Size="integer"
Type="Empty|Object|DBNull|Boolean|Char|SByte|
Byte|Int16|UInt16|Int32|UInt32|Int64|UInt64|
Single|Double|Decimal|DateTime|String"
/>
<asp:Parameter
ConvertEmptyStringToNull="True|False"
DefaultValue="string"
Direction="Input|Output|InputOutput|ReturnValue"
Name="string"
Size="integer"
Type="Empty|Object|DBNull|Boolean|Char|SByte|
Byte|Int16|UInt16|Int32|UInt32|Int64|UInt64|
Single|Double|Decimal|DateTime|String"
/>
<asp:ProfileParameter
ConvertEmptyStringToNull="True|False"
DefaultValue="string"
Direction="Input|Output|InputOutput|ReturnValue"
Name="string"
PropertyName="string"
Size="integer"
Type="Empty|Object|DBNull|Boolean|Char|SByte|
Byte|Int16|UInt16|Int32|UInt32|Int64|UInt64|
Single|Double|Decimal|DateTime|String"
/>
<asp:QueryStringParameter
ConvertEmptyStringToNull="True|False"
DefaultValue="string"
Direction="Input|Output|InputOutput|ReturnValue"
Name="string"
QueryStringField="string"
Size="integer"
Type="Empty|Object|DBNull|Boolean|Char|SByte|
Byte|Int16|UInt16|Int32|UInt32|Int64|UInt64|
Single|Double|Decimal|DateTime|String"
/>
<asp:SessionParameter
ConvertEmptyStringToNull="True|False"
DefaultValue="string"
Direction="Input|Output|InputOutput|ReturnValue"
Name="string"
SessionField="string"
Size="integer"
Type="Empty|Object|DBNull|Boolean|Char|SByte|
Byte|Int16|UInt16|Int32|UInt32|Int64|UInt64|
Single|Double|Decimal|DateTime|String"
/>
</FilterParameters>
<InsertParameters>
<asp:ControlParameter
ControlID="string"
ConvertEmptyStringToNull="True|False"
DefaultValue="string"
Direction="Input|Output|InputOutput|ReturnValue"
Name="string"
PropertyName="string"
Size="integer"
Type="Empty|Object|DBNull|Boolean|Char|SByte|
Byte|Int16|UInt16|Int32|UInt32|Int64|UInt64|
Single|Double|Decimal|DateTime|String"
/>
<asp:CookieParameter
ConvertEmptyStringToNull="True|False"
CookieName="string"
DefaultValue="string"
Direction="Input|Output|InputOutput|ReturnValue"
Name="string"
Size="integer"
Type="Empty|Object|DBNull|Boolean|Char|SByte|
Byte|Int16|UInt16|Int32|UInt32|Int64|UInt64|
Single|Double|Decimal|DateTime|String"
/>
<asp:FormParameter
ConvertEmptyStringToNull="True|False"
DefaultValue="string"
Direction="Input|Output|InputOutput|ReturnValue"
FormField="string"
Name="string"
Size="integer"
Type="Empty|Object|DBNull|Boolean|Char|SByte|
Byte|Int16|UInt16|Int32|UInt32|Int64|UInt64|
Single|Double|Decimal|DateTime|String"
/>
<asp:Parameter
ConvertEmptyStringToNull="True|False"
DefaultValue="string"
Direction="Input|Output|InputOutput|ReturnValue"
Name="string"
Size="integer"
Type="Empty|Object|DBNull|Boolean|Char|SByte|
Byte|Int16|UInt16|Int32|UInt32|Int64|UInt64|
Single|Double|Decimal|DateTime|String"
/>
<asp:ProfileParameter
ConvertEmptyStringToNull="True|False"
DefaultValue="string"
Direction="Input|Output|InputOutput|ReturnValue"
Name="string"
PropertyName="string"
Size="integer"
Type="Empty|Object|DBNull|Boolean|Char|SByte|
Byte|Int16|UInt16|Int32|UInt32|Int64|UInt64|
Single|Double|Decimal|DateTime|String"
/>
<asp:QueryStringParameter
ConvertEmptyStringToNull="True|False"
DefaultValue="string"
Direction="Input|Output|InputOutput|ReturnValue"
Name="string"
QueryStringField="string"
Size="integer"
Type="Empty|Object|DBNull|Boolean|Char|SByte|
Byte|Int16|UInt16|Int32|UInt32|Int64|UInt64|
Single|Double|Decimal|DateTime|String"
/>
<asp:SessionParameter
ConvertEmptyStringToNull="True|False"
DefaultValue="string"
Direction="Input|Output|InputOutput|ReturnValue"
Name="string"
SessionField="string"
Size="integer"
Type="Empty|Object|DBNull|Boolean|Char|SByte|
Byte|Int16|UInt16|Int32|UInt32|Int64|UInt64|
Single|Double|Decimal|DateTime|String"
/>
</InsertParameters>
<SelectParameters>
<asp:ControlParameter
ControlID="string"
ConvertEmptyStringToNull="True|False"
DefaultValue="string"
Direction="Input|Output|InputOutput|ReturnValue"
Name="string"
PropertyName="string"
Size="integer"
Type="Empty|Object|DBNull|Boolean|Char|SByte|
Byte|Int16|UInt16|Int32|UInt32|Int64|UInt64|
Single|Double|Decimal|DateTime|String"
/>
<asp:CookieParameter
ConvertEmptyStringToNull="True|False"
CookieName="string"
DefaultValue="string"
Direction="Input|Output|InputOutput|ReturnValue"
Name="string"
Size="integer"
Type="Empty|Object|DBNull|Boolean|Char|SByte|
Byte|Int16|UInt16|Int32|UInt32|Int64|UInt64|
Single|Double|Decimal|DateTime|String"
/>
<asp:FormParameter
ConvertEmptyStringToNull="True|False"
DefaultValue="string"
Direction="Input|Output|InputOutput|ReturnValue"
FormField="string"
Name="string"
Size="integer"
Type="Empty|Object|DBNull|Boolean|Char|SByte|
Byte|Int16|UInt16|Int32|UInt32|Int64|UInt64|
Single|Double|Decimal|DateTime|String"
/>
<asp:Parameter
ConvertEmptyStringToNull="True|False"
DefaultValue="string"
Direction="Input|Output|InputOutput|ReturnValue"
Name="string"
Size="integer"
Type="Empty|Object|DBNull|Boolean|Char|SByte|
Byte|Int16|UInt16|Int32|UInt32|Int64|UInt64|
Single|Double|Decimal|DateTime|String"
/>
<asp:ProfileParameter
ConvertEmptyStringToNull="True|False"
DefaultValue="string"
Direction="Input|Output|InputOutput|ReturnValue"
Name="string"
PropertyName="string"
Size="integer"
Type="Empty|Object|DBNull|Boolean|Char|SByte|
Byte|Int16|UInt16|Int32|UInt32|Int64|UInt64|
Single|Double|Decimal|DateTime|String"
/>
<asp:QueryStringParameter
ConvertEmptyStringToNull="True|False"
DefaultValue="string"
Direction="Input|Output|InputOutput|ReturnValue"
Name="string"
QueryStringField="string"
Size="integer"
Type="Empty|Object|DBNull|Boolean|Char|SByte|
Byte|Int16|UInt16|Int32|UInt32|Int64|UInt64|
Single|Double|Decimal|DateTime|String"
/>
<asp:SessionParameter
ConvertEmptyStringToNull="True|False"
DefaultValue="string"
Direction="Input|Output|InputOutput|ReturnValue"
Name="string"
SessionField="string"
Size="integer"
Type="Empty|Object|DBNull|Boolean|Char|SByte|
Byte|Int16|UInt16|Int32|UInt32|Int64|UInt64|
Single|Double|Decimal|DateTime|String"
/>
</SelectParameters>
<UpdateParameters>
<asp:ControlParameter
ControlID="string"
ConvertEmptyStringToNull="True|False"
DefaultValue="string"
Direction="Input|Output|InputOutput|ReturnValue"
Name="string"
PropertyName="string"
Size="integer"
Type="Empty|Object|DBNull|Boolean|Char|SByte|
Byte|Int16|UInt16|Int32|UInt32|Int64|UInt64|
Single|Double|Decimal|DateTime|String"
/>
<asp:CookieParameter
ConvertEmptyStringToNull="True|False"
CookieName="string"
DefaultValue="string"
Direction="Input|Output|InputOutput|ReturnValue"
Name="string"
Size="integer"
Type="Empty|Object|DBNull|Boolean|Char|SByte|
Byte|Int16|UInt16|Int32|UInt32|Int64|UInt64|
Single|Double|Decimal|DateTime|String"
/>
<asp:FormParameter
ConvertEmptyStringToNull="True|False"
DefaultValue="string"
Direction="Input|Output|InputOutput|ReturnValue"
FormField="string"
Name="string"
Size="integer"
Type="Empty|Object|DBNull|Boolean|Char|SByte|
Byte|Int16|UInt16|Int32|UInt32|Int64|UInt64|
Single|Double|Decimal|DateTime|String"
/>
<asp:Parameter
ConvertEmptyStringToNull="True|False"
DefaultValue="string"
Direction="Input|Output|InputOutput|ReturnValue"
Name="string"
Size="integer"
Type="Empty|Object|DBNull|Boolean|Char|SByte|
Byte|Int16|UInt16|Int32|UInt32|Int64|UInt64|
Single|Double|Decimal|DateTime|String"
/>
<asp:ProfileParameter
ConvertEmptyStringToNull="True|False"
DefaultValue="string"
Direction="Input|Output|InputOutput|ReturnValue"
Name="string"
PropertyName="string"
Size="integer"
Type="Empty|Object|DBNull|Boolean|Char|SByte|
Byte|Int16|UInt16|Int32|UInt32|Int64|UInt64|
Single|Double|Decimal|DateTime|String"
/>
<asp:QueryStringParameter
ConvertEmptyStringToNull="True|False"
DefaultValue="string"
Direction="Input|Output|InputOutput|ReturnValue"
Name="string"
QueryStringField="string"
Size="integer"
Type="Empty|Object|DBNull|Boolean|Char|SByte|
Byte|Int16|UInt16|Int32|UInt32|Int64|UInt64|
Single|Double|Decimal|DateTime|String"
/>
<asp:SessionParameter
ConvertEmptyStringToNull="True|False"
DefaultValue="string"
Direction="Input|Output|InputOutput|ReturnValue"
Name="string"
SessionField="string"
Size="integer"
Type="Empty|Object|DBNull|Boolean|Char|SByte|
Byte|Int16|UInt16|Int32|UInt32|Int64|UInt64|
Single|Double|Decimal|DateTime|String"
/>
</UpdateParameters>
</asp:AccessDataSource>
备注
AccessDataSource 类是一个使用 Microsoft Access 数据库的数据源控件。AccessDataSource 控件与其基类 SqlDataSource 一样，也使用 SQL 查询执行数据检索。
AccessDataSource 控件的独有特征之一是不设置 ConnectionString 属性。您只需要使用 DataFile 属性设置 Access .mdb 文件的位置即可，AccessDataSource 将负责到数据库的基础连接。应将 Access 数据库放在网站的 App_Data 目录中，并通过相对路径（如 ~/App_Data/Northwind.mdb）引用这些数据库。该位置为数据文件提供了额外的安全性，因为如果客户端 Web 浏览器直接请求这些文件，将不会提供它们。
AccessDataSource 类不支持连接到受用户名或密码保护的 Access 数据库，因为您无法设置 ConnectionString 属性。如果 Access 数据库受用户名或密码保护，请使用 SqlDataSource 控件连接到该数据库，以便您可以指定完整的连接字符串。
使用数据绑定控件的 DataSourceID 属性将其绑定到 AccessDataSource。有关将数据绑定控件绑定到数据源控件的更多信息，请参见使用数据源控件绑定到数据。
有关使用 AccessDataSource 控件的更多信息，请参见 AccessDataSource Web 服务器控件概述。
示例
下面的代码示例演示一个针对 GridView 控件的常见的显示和更新方案。该示例将 SelectCommand 属性设置为适当的 SQL 查询，并在 GridView 控件中显示 Northwind 数据库中的数据。由于还指定了 UpdateCommand 并将 AutoGenerateEditButton 设置为 true，因此无需额外的代码就可以编辑和更新记录。GridView 控件负责向 UpdateParameters 集合添加参数；GridView 首先传递 BoundField 对象的参数值，接着传递 DataKeyNames 属性所指定的字段的值。GridView 自动调用 Update 方法。如果要对这些参数进行排序，需要在 AccessDataSource 对象上显式指定 UpdateParameters 集合。
<%@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:accessdatasource
id="AccessDataSource1"
runat="server"
datasourcemode="DataSet"
datafile="~/App_Data/Northwind.mdb"
selectcommand="SELECT EmployeeID,FirstName,LastName,Title FROM Employees"
updatecommand="Update Employees SET FirstName=?,LastName=?,Title=? WHERE EmployeeID=@EmployeeID">
</asp:accessdatasource>
<asp:gridview
id="GridView1"
runat="server"
autogeneratecolumns="False"
datakeynames="EmployeeID"
autogenerateeditbutton="True"
datasourceid="AccessDataSource1">
<columns>
<asp:boundfield headertext="First Name" datafield="FirstName" />
<asp:boundfield headertext="Last Name" datafield="LastName" />
<asp:boundfield headertext="Title" datafield="Title" />
</columns>
</asp:gridview>
</form>
</body>
</html>
<%@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:accessdatasource
id="AccessDataSource1"
runat="server"
datasourcemode="DataSet"
datafile="~/App_Data/Northwind.mdb"
selectcommand="SELECT EmployeeID,FirstName,LastName,Title FROM Employees"
updatecommand="Update Employees SET FirstName=?,LastName=?,Title=? WHERE EmployeeID=@EmployeeID">
</asp:accessdatasource>
<asp:gridview
id="GridView1"
runat="server"
autogeneratecolumns="False"
datakeynames="EmployeeID"
autogenerateeditbutton="True"
datasourceid="AccessDataSource1">
<columns>
<asp:boundfield headertext="First Name" datafield="FirstName" />
<asp:boundfield headertext="Last Name" datafield="LastName" />
<asp:boundfield headertext="Title" datafield="Title" />
</columns>
</asp:gridview>
</form>
</body>
</html>
<%@Page Language="VJ#" %>
<!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:AccessDataSource
id="AccessDataSource1"
runat="server"
DataSourceMode="DataSet"
DataFile="~/App_Data/Northwind.mdb"
SelectCommand="SELECT EmployeeID,FirstName,LastName,Title FROM Employees"
UpdateCommand="Update Employees SET FirstName=@FirstName,LastName=@LastName,Title=@Title WHERE EmployeeID=@EmployeeID">
</asp:AccessDataSource>
<asp:GridView
id="GridView1"
runat="server"
AutoGenerateColumns="False"
DataKeyNames="EmployeeID"
AutoGenerateEditButton="True"
DataSourceID="AccessDataSource1">
<Columns>
<asp:BoundField HeaderText="First Name" DataField="FirstName" />
<asp:BoundField HeaderText="Last Name" DataField="LastName" />
<asp:BoundField HeaderText="Title" DataField="Title" />
</Columns>
</asp:GridView>
</form>
</body>
</html>