ASP.NET程序中常用代码汇总(一)
document.title="ASP.NET程序中常用代码汇总(一) - "+document.title
1. 打开新的窗口并传送参数:
//
传送参数:
response.write( " <script>window.open(’*.aspx?id= " + this .DropDownList1.SelectIndex + " &id1= " + + " ’)</script> " )
// 接收参数:
string a = Request.QueryString( " id " );
string b = Request.QueryString( " id1 " );
2.为按钮添加对话框
response.write( " <script>window.open(’*.aspx?id= " + this .DropDownList1.SelectIndex + " &id1= " + + " ’)</script> " )
// 接收参数:
string a = Request.QueryString( " id " );
string b = Request.QueryString( " id1 " );
Button1.Attributes.Add(
"
onclick
"
,
"
returnconfirm(’确认?’)
"
);
button.attributes.add( " onclick " , " if(confirm(’areyousure ?’)){returntrue;}else{returnfalse;} " )
3.删除表格选定记录
button.attributes.add( " onclick " , " if(confirm(’areyousure ?’)){returntrue;}else{returnfalse;} " )
int
intEmpID
=
(
int
)MyDataGrid.DataKeys[e.Item.ItemIndex];
string deleteCmd = " DELETEfromEmployeewhereemp_id= " + intEmpID.ToString()
4.删除表格记录警告
string deleteCmd = " DELETEfromEmployeewhereemp_id= " + intEmpID.ToString()
private
void
DataGrid_ItemCreated(Objectsender,DataGridItemEventArgse)
{
switch (e.Item.ItemType)
{
case ListItemType.Item:
case ListItemType.AlternatingItem:
case ListItemType.EditItem:
TableCellmyTableCell;
myTableCell = e.Item.Cells[ 14 ];
LinkButtonmyDeleteButton;
myDeleteButton = (LinkButton)myTableCell.Controls[ 0 ];
myDeleteButton.Attributes.Add( " onclick " , " returnconfirm(’您是否确定要删除这条信息’); " );
break ;
default :
break ;
}
}
5.点击表格行链接另一页
{
switch (e.Item.ItemType)
{
case ListItemType.Item:
case ListItemType.AlternatingItem:
case ListItemType.EditItem:
TableCellmyTableCell;
myTableCell = e.Item.Cells[ 14 ];
LinkButtonmyDeleteButton;
myDeleteButton = (LinkButton)myTableCell.Controls[ 0 ];
myDeleteButton.Attributes.Add( " onclick " , " returnconfirm(’您是否确定要删除这条信息’); " );
break ;
default :
break ;
}
}
private
void
grdCustomer_ItemDataBound(
object
sender,System.Web.UI.WebControls.DataGridItemEventArgse)
{
// 点击表格打开
if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
e.Item.Attributes.Add( " onclick " , " window.open(’Default.aspx?id= " + e.Item.Cells[ 0 ].Text + " ’); " );
}
// 双击表格连接到另一页
// 在itemDataBind事件中
if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
{
string OrderItemID = e.item.cells[ 1 ].Text;
e.item.Attributes.Add( " ondblclick " , " location.href=’../ShippedGrid.aspx?id= " + OrderItemID + " ’ " );
}
// 双击表格打开新一页
if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
{
string OrderItemID = e.item.cells[ 1 ].Text;
e.item.Attributes.Add( " ondblclick " , " open(’../ShippedGrid.aspx?id= " + OrderItemID + " ’) " );
}
★特别注意:【 ? id = 】处不能为【 ? id = 】
6.表格超连接列传递参数
{
// 点击表格打开
if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
e.Item.Attributes.Add( " onclick " , " window.open(’Default.aspx?id= " + e.Item.Cells[ 0 ].Text + " ’); " );
}
// 双击表格连接到另一页
// 在itemDataBind事件中
if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
{
string OrderItemID = e.item.cells[ 1 ].Text;
e.item.Attributes.Add( " ondblclick " , " location.href=’../ShippedGrid.aspx?id= " + OrderItemID + " ’ " );
}
// 双击表格打开新一页
if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
{
string OrderItemID = e.item.cells[ 1 ].Text;
e.item.Attributes.Add( " ondblclick " , " open(’../ShippedGrid.aspx?id= " + OrderItemID + " ’) " );
}
★特别注意:【 ? id = 】处不能为【 ? id = 】
<asp:HyperLinkColumnTarget="_blank"headertext="ID号"DataTextField="id"NavigateUrl="aaa.aspx?id=’
<%#DataBinder.Eval(Container.DataItem,"数据字段1")%>’&name=’<%#DataBinder.Eval(Container.DataItem,"数据字段2")%>’/>
7.表格点击改变颜色
<%#DataBinder.Eval(Container.DataItem,"数据字段1")%>’&name=’<%#DataBinder.Eval(Container.DataItem,"数据字段2")%>’/>
if
(e.Item.ItemType
==
ListItemType.Item
||
e.Item.ItemType
==
ListItemType.AlternatingItem)
{
e.Item.Attributes.Add( " onclick " , " this.style.backgroundColor=’#99cc00’;
this .style.color = ’buttontext’; this .style.cursor = ’ default ’; " );
}
写在DataGrid的_ItemDataBound里
if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
{
e.Item.Attributes.Add( " onmouseover " , " this.style.backgroundColor=’#99cc00’;
this .style.color = ’buttontext’; this .style.cursor = ’ default ’; " );
e.Item.Attributes.Add( " onmouseout " , " this.style.backgroundColor=’’;this.style.color=’’; " );
}
{
e.Item.Attributes.Add( " onclick " , " this.style.backgroundColor=’#99cc00’;
this .style.color = ’buttontext’; this .style.cursor = ’ default ’; " );
}
写在DataGrid的_ItemDataBound里
if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
{
e.Item.Attributes.Add( " onmouseover " , " this.style.backgroundColor=’#99cc00’;
this .style.color = ’buttontext’; this .style.cursor = ’ default ’; " );
e.Item.Attributes.Add( " onmouseout " , " this.style.backgroundColor=’’;this.style.color=’’; " );
}
8.关于日期格式
日期格式设定
DataFormatString = " {0:yyyy-MM-dd} "
// 我觉得应该在itembound事件中
e.items.cell[ " 你的列 " ].text = DateTime.Parse(e.items.cell[ " 你的列 " ].text.ToString( " yyyy-MM-dd " ))
9.获取错误信息并到指定页面
DataFormatString = " {0:yyyy-MM-dd} "
// 我觉得应该在itembound事件中
e.items.cell[ " 你的列 " ].text = DateTime.Parse(e.items.cell[ " 你的列 " ].text.ToString( " yyyy-MM-dd " ))
//
不要使用Response.Redirect,而应该使用Server.Transfer
e.g
// inglobal.asax
protected void Application_Error(Objectsender,EventArgse) {
if (Server.GetLastError() is HttpUnhandledException)
Server.Transfer( " MyErrorPage.aspx " );
// 其余的非HttpUnhandledException异常交给ASP.NET自己处理就okay了:)
}
// Redirect会导致post-back的产生从而丢失了错误信息,所以页面导向应该直接在服务器端执行,这样就可以在错误处理页面得到出错信息并进行相应的处理
10.清空Cookie
e.g
// inglobal.asax
protected void Application_Error(Objectsender,EventArgse) {
if (Server.GetLastError() is HttpUnhandledException)
Server.Transfer( " MyErrorPage.aspx " );
// 其余的非HttpUnhandledException异常交给ASP.NET自己处理就okay了:)
}
// Redirect会导致post-back的产生从而丢失了错误信息,所以页面导向应该直接在服务器端执行,这样就可以在错误处理页面得到出错信息并进行相应的处理
Cookie.Expires
=
[DateTime];
Response.Cookies( " UserName " ).Expires = 0
Response.Cookies( " UserName " ).Expires = 0