ASP.NET技巧

Jul 11, 2007 13:59

1.打开新窗口并传递参数
//传送参数:
Response.Write(""); 
//接收参数:
string a = Request.QueryString("id");
string b = Request.QueryString("id1")
2.为按钮添加对话框
Button1.Attributes.Add("onclick","return confirm(’确认?’)");
button.attributes.add("onclick","if(confirm(’are you sure?’))
{return true;}else{return false;}")
3.删除表格选定记录
int intEmpID = (int)MyDataGrid.DataKeys[e.Item.ItemIndex];
string deleteCmd = "DELETE from Employee where emp_id = " + intEmpID.ToString()
4.删除表格记录警告
private void DataGrid_ItemCreated(Object sender,DataGridItemEventArgs e)
{ switch(e.Item.ItemType) 
{  case ListItemType.Item :  
case ListItemType.AlternatingItem :  
case ListItemType.EditItem:   
TableCell myTableCell;   
myTableCell = e.Item.Cells[14];   
LinkButton myDeleteButton ;   
myDeleteButton = (LinkButton)myTableCell.Controls[0];   
myDeleteButton.Attributes.Add("onclick","return confirm(’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
private void grdCustomer_ItemDataBound(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)
{ //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<asp:HyperLinkColumn Target="_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=’’;");}
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//不要使用Response.Redirect,而应该使用Server.Transfer 
 e.g// in global.asaxprotected void Application_Error(Object sender, EventArgs e) {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 Cookie.Expires=[DateTime];Response.Cookies("UserName").Expires = 0
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