在平时的实际项目中,为了减少往返提交数据,可以一次编辑 GridView 的所有行,这样大大提高用户使用产品的体验。下面就讲解何一次编辑 GridView 的所有数据行。在下面的例子中,数据库使用《ASP.NET 2.0应用开发技术》一书中Site\App_Data\下的 ASPNET20Book.mdb 数据库。例子中的数据更新方式使用 SqlDataSource 数据源控件的UpdateCommand属性,但此方法同样适用于存储过程,SQL 语句等。
C#
<%
@ Page Language
=
"
C#
"
Debug
=
"
true
"
%>
<!
DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"
>
<
script
runat
="server"
>
string[] ClassNameArray
=
{
"
大学
"
,
"
中学
"
,
"
高中
"
};
//
初始化原来的值
protected
void
GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
if
(e.Row.RowType
==
DataControlRowType.DataRow)
{
System.Data.DataRowView drv
=
(System.Data.DataRowView)e.Row.DataItem;
RadioButtonList rbl
=
(RadioButtonList)e.Row.FindControl(
"
txtGender
"
);
if
(rbl
!=
null
)
{
if
((bool)drv[
"
Gender
"
])
{
rbl.Items.FindByText(
"
男
"
).Selected
=
true
;
}
else
{
rbl.Items.FindByText(
"
女
"
).Selected
=
true
;
}
}
DropDownList ddl
=
(DropDownList)e.Row.FindControl(
"
txtClassName
"
);
if
(ddl
!=
null
)
{
ddl.Items.FindByText(drv[
"
ClassName
"
].ToString()).Selected
=
true
;
}
}
}
//
初始化项目列表
protected
void
GridView1_RowCreated(object sender, GridViewRowEventArgs e)
{
if
(e.Row.RowType
==
DataControlRowType.DataRow)
{
DropDownList ddl
=
(DropDownList)e.Row.FindControl(
"
txtClassName
"
);
ddl.DataSource
=
ClassNameArray;
ddl.DataBind();
}
}
//
处理提交的数据
protected
void
XianhuiMeng_Click(object sender, EventArgs e)
{
foreach (GridViewRow gvr
in
GridView1.Rows)
{
string tGender
=
((RadioButtonList)gvr.FindControl(
"
txtGender
"
)).SelectedValue;
SqlDataSource1.UpdateParameters.Add(
new
Parameter(
"
@Title
"
, TypeCode.String, ((TextBox)gvr.FindControl(
"
txtTitle
"
)).Text));
SqlDataSource1.UpdateParameters.Add(
new
Parameter(
"
@Gender
"
, TypeCode.Boolean, (tGender
==
"
男
"
?
"
True
"
:
"
False
"
)));
SqlDataSource1.UpdateParameters.Add(
new
Parameter(
"
@ClassName
"
,
TypeCode.String, ((DropDownList)gvr.FindControl(
"
txtClassName
"
)).SelectedValue));
SqlDataSource1.UpdateParameters.Add(
new
Parameter(
"
@id
"
, TypeCode.Int32, GridView1.DataKeys[gvr.DataItemIndex].Value.ToString()));
SqlDataSource1.Update();
SqlDataSource1.UpdateParameters.Clear();
}
Response.Redirect(Request.UrlReferrer.ToString());
}
</
script
>
<
html
xmlns
="http://www.w3.org/1999/xhtml"
>
<
head
id
="Head1"
runat
="server"
>
<
title
>
同时编辑 GridView的 多行
</
title
>
</
head
>
<
body
>
<
form
id
="form1"
runat
="server"
>
<
asp:GridView
ID
="GridView1"
runat
="server"
Font-Size
="12px"
CellPadding
="3"
AutoGenerateColumns
="False"
DataKeyNames
="id"
DataSourceID
="SqlDataSource1"
OnRowDataBound
="GridView1_RowDataBound"
OnRowCreated
="GridView1_RowCreated"
>
<
HeaderStyle
BackColor
="#EDEDED"
/>
<
Columns
>
<
asp:TemplateField
HeaderText
="姓名"
>
<
ItemTemplate
>
<
asp:TextBox
ID
="txtTitle"
runat
="server"
Text
='<%#Eval("Title")
%
>
'>
</
asp:TextBox
>
</
ItemTemplate
>
</
asp:TemplateField
>
<
asp:TemplateField
HeaderText
="性别"
>
<
ItemTemplate
>
<
asp:RadioButtonList
ID
="txtGender"
runat
="server"
RepeatColumns
="2"
>
<
asp:ListItem
Text
='男'
></
asp:ListItem
>
<
asp:ListItem
Text
='女'
></
asp:ListItem
>
</
asp:RadioButtonList
>
</
ItemTemplate
>
</
asp:TemplateField
>
<
asp:TemplateField
HeaderText
="学历"
>
<
ItemTemplate
>
<
asp:DropDownList
ID
="txtClassName"
runat
="server"
>
</
asp:DropDownList
>
</
ItemTemplate
>
</
asp:TemplateField
>
</
Columns
>
</
asp:GridView
>
<
asp:SqlDataSource
ID
="SqlDataSource1"
runat
="server"
ConnectionString
="Provider=Microsoft.Jet.OLEDB.4.0;Data Source=|DataDirectory|ASPNET20Book.mdb;Persist Security Info=True"
ProviderName
="System.Data.OleDb"
SelectCommand
="SELECT * FROM [Student]"
UpdateCommand
="Update [Student] Set Title = @Title,Gender = @Gender,ClassName=@ClassName Where id=@id"
>
</
asp:SqlDataSource
>
<
asp:Button
ID
="Button1"
runat
="server"
Text
="保存所有修改"
OnClick
="XianhuiMeng_Click"
/>
</
form
>
</
body
>
</
html
>
注意:对于SQL Server 数据库,参数名字不加@。另外注意:不同数据库类型和不同的数据源,UpdateCommand="Update [Student] Set Title = @Title,Gender = @Gender,ClassName=@ClassName Where id=@id"写法和SqlDataSource1.UpdateParameters.Add(new Parameter("@Title", TypeCode.String, ((TextBox)gvr.FindControl("txtTitle")).Text)); 的写法会有所区别。