EnableSortingAndPagingCallbacks Property
from:http://msdn2.microsoft.com/en-us/library/system.web.ui.webcontrols.gridview.enablesortingandpagingcallbacks.aspx
Namespace: System.Web.UI.WebControls
Assembly: System.Web (in system.web.dll)
Exceptions| Exception type | Condition |
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This property is set to true when the Columns collection contains a column that does not support callbacks, such as TemplateField. |
RemarksBy default, when a sorting or paging operation is performed, the GridView control posts back to the server to perform the operation. When the EnableSortingAndPagingCallbacks property is set to true, a service is called on the client to perform sorting and paging operations, which eliminates the need to post back to the server.
.gif) Note: |
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Not all browsers support this feature. To determine whether a browser supports this feature, use the SupportsCallback property. |
All columns in the Columns collection must support callbacks for this feature to work. If the Columns collection contains a column that does not support callbacks, such as TemplateField, a NotSupportedException exception is raised.
ExampleThe following code example demonstrates how to use the EnableSortingAndPagingCallbacks property to enable client-side callbacks for sorting and paging operations.
Copy Code<%@ Page language="VB" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html > <head runat="server"> <title>GridView EnableSortingAndPagingCallbacks Example</title> </head> <body> <form id="form1" runat="server"> <h3>GridView EnableSortingAndPagingCallbacks Example</h3> <asp:gridview id="CustomersGridView" datasourceid="CustomersSource" autogeneratecolumns="true" emptydatatext="No data available." allowpaging="true" allowsorting="true" enablesortingandpagingcallbacks="true" runat="server"> </asp:gridview> <!-- 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="CustomersSource" selectcommand="Select [CustomerID], [CompanyName], [Address], [City], [PostalCode], [Country] From [Customers]" connectionstring="<%$ ConnectionStrings:NorthWindConnectionString%>" runat="server"/> </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 > <head runat="server"> <title>GridView EnableSortingAndPagingCallbacks Example</title> </head> <body> <form id="form1" runat="server"> <h3>GridView EnableSortingAndPagingCallbacks Example</h3> <asp:gridview id="CustomersGridView" datasourceid="CustomersSource" autogeneratecolumns="true" emptydatatext="No data available." allowpaging="true" allowsorting="true" enablesortingandpagingcallbacks="true" runat="server"> </asp:gridview> <!-- 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="CustomersSource" selectcommand="Select [CustomerID], [CompanyName], [Address], [City], [PostalCode], [Country] From [Customers]" connectionstring="<%$ ConnectionStrings:NorthWindConnectionString%>" runat="server"/> </form> </body> </html>
Namespace: System.Web.UI.WebControls
Assembly: System.Web (in system.web.dll)
Exceptions| Exception type | Condition |
|---|---|
|
This property is set to true when the Columns collection contains a column that does not support callbacks, such as TemplateField. |
RemarksBy default, when a sorting or paging operation is performed, the GridView control posts back to the server to perform the operation. When the EnableSortingAndPagingCallbacks property is set to true, a service is called on the client to perform sorting and paging operations, which eliminates the need to post back to the server.
| Note: |
|---|
|
Not all browsers support this feature. To determine whether a browser supports this feature, use the SupportsCallback property. |
All columns in the Columns collection must support callbacks for this feature to work. If the Columns collection contains a column that does not support callbacks, such as TemplateField, a NotSupportedException exception is raised.
ExampleThe following code example demonstrates how to use the EnableSortingAndPagingCallbacks property to enable client-side callbacks for sorting and paging operations.
<%@ Page language="VB" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html > <head runat="server"> <title>GridView EnableSortingAndPagingCallbacks Example</title> </head> <body> <form id="form1" runat="server"> <h3>GridView EnableSortingAndPagingCallbacks Example</h3> <asp:gridview id="CustomersGridView" datasourceid="CustomersSource" autogeneratecolumns="true" emptydatatext="No data available." allowpaging="true" allowsorting="true" enablesortingandpagingcallbacks="true" runat="server"> </asp:gridview> <!-- 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="CustomersSource" selectcommand="Select [CustomerID], [CompanyName], [Address], [City], [PostalCode], [Country] From [Customers]" connectionstring="<%$ ConnectionStrings:NorthWindConnectionString%>" runat="server"/> </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 > <head runat="server"> <title>GridView EnableSortingAndPagingCallbacks Example</title> </head> <body> <form id="form1" runat="server"> <h3>GridView EnableSortingAndPagingCallbacks Example</h3> <asp:gridview id="CustomersGridView" datasourceid="CustomersSource" autogeneratecolumns="true" emptydatatext="No data available." allowpaging="true" allowsorting="true" enablesortingandpagingcallbacks="true" runat="server"> </asp:gridview> <!-- 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="CustomersSource" selectcommand="Select [CustomerID], [CompanyName], [Address], [City], [PostalCode], [Country] From [Customers]" connectionstring="<%$ ConnectionStrings:NorthWindConnectionString%>" runat="server"/> </form> </body> </html>
Namespace: System.Web.UI.WebControls
Assembly: System.Web (in system.web.dll)
Exceptions| Exception type | Condition |
|---|---|
|
This property is set to true when the Columns collection contains a column that does not support callbacks, such as TemplateField. |
RemarksBy default, when a sorting or paging operation is performed, the GridView control posts back to the server to perform the operation. When the EnableSortingAndPagingCallbacks property is set to true, a service is called on the client to perform sorting and paging operations, which eliminates the need to post back to the server.
| Note: |
|---|
|
Not all browsers support this feature. To determine whether a browser supports this feature, use the SupportsCallback property. |
All columns in the Columns collection must support callbacks for this feature to work. If the Columns collection contains a column that does not support callbacks, such as TemplateField, a NotSupportedException exception is raised.
ExampleThe following code example demonstrates how to use the EnableSortingAndPagingCallbacks property to enable client-side callbacks for sorting and paging operations.
<%@ Page language="VB" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html > <head runat="server"> <title>GridView EnableSortingAndPagingCallbacks Example</title> </head> <body> <form id="form1" runat="server"> <h3>GridView EnableSortingAndPagingCallbacks Example</h3> <asp:gridview id="CustomersGridView" datasourceid="CustomersSource" autogeneratecolumns="true" emptydatatext="No data available." allowpaging="true" allowsorting="true" enablesortingandpagingcallbacks="true" runat="server"> </asp:gridview> <!-- 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="CustomersSource" selectcommand="Select [CustomerID], [CompanyName], [Address], [City], [PostalCode], [Country] From [Customers]" connectionstring="<%$ ConnectionStrings:NorthWindConnectionString%>" runat="server"/> </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 > <head runat="server"> <title>GridView EnableSortingAndPagingCallbacks Example</title> </head> <body> <form id="form1" runat="server"> <h3>GridView EnableSortingAndPagingCallbacks Example</h3> <asp:gridview id="CustomersGridView" datasourceid="CustomersSource" autogeneratecolumns="true" emptydatatext="No data available." allowpaging="true" allowsorting="true" enablesortingandpagingcallbacks="true" runat="server"> </asp:gridview> <!-- 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="CustomersSource" selectcommand="Select [CustomerID], [CompanyName], [Address], [City], [PostalCode], [Country] From [Customers]" connectionstring="<%$ ConnectionStrings:NorthWindConnectionString%>" runat="server"/> </form> </body> </html>
