ASP.NET入門實用語句

1.//彈出對話方塊.點擊轉向指定頁面
Response.Write(&quot; <script>window.alert('該會員沒有提交申請,請重新提交！')
</script>&quot;);
Response.Write(&quot; <script>window.location
='http://www.51aspx.com/bizpulic/upmeb.aspx' </script>&quot;);
2.//彈出對話方塊
Response.Write(&quot; <script language='javascript'>alert('產品添加成功！')
</script >&quot;);
3.//刪除檔案
string filename =&quot;20059595157517.jpg&quot;;
pub.util.DeleteFile(HttpContext.Current.Server.MapPath(&quot;../file/&quot;)
+filename);
4.//綁定下拉式清單方塊datalist
System.Data.DataView dv=conn.Exec_ex(&quot;select -1 as code,'請選擇經營模式'
as content from dealin union select code,content from dealin&quot;);
this.dealincode.DataSource=dv;
this.dealincode.DataTextField=&quot;content&quot;;
this.dealincode.DataValueField=&quot;code&quot;;   
this.dealincode.DataBind();
this.dealincode.Items.FindByValue(dv[0][&quot;dealincode&quot;].ToString
()).Selected=true;
5.//時間去秒顯示
<%# System.DateTime.Parse(DataBinder.Eval
(Container.DataItem,&quot;begtime&quot;).ToString()).ToShortDateString()%>
6.//標題帶連結
<%# &quot; <a class=\&quot;12c\&quot; target=\&quot;_blank\&quot;
href=\&quot;http://www.51aspx/CV/_&quot;+DataBinder.Eval
(Container.DataItem,&quot;procode&quot;)+&quot;.html\&quot;>&quot;+
DataBinder.Eval(Container.DataItem,&quot;proname&quot;)+&quot; </a>&quot;%>
7.//修改轉向
<%# &quot; <A href=\&quot;editpushpro.aspx?id=&quot;+DataBinder.Eval
(Container.DataItem,&quot;code&quot;)+&quot;\&quot;>&quot;+&quot;修改
&quot;+&quot; </A>&quot;%>
8.//彈出確定按鈕
<%# &quot; <A id=\&quot;btnDelete\&quot; onclick=\&quot;return confirm('你是否
確定刪除這條記錄嗎?');\&quot; href=\&quot;pushproduct.aspx?
dl=&quot;+DataBinder.Eval(Container.DataItem,&quot;code&quot;)
+&quot;\&quot;>&quot;+&quot;刪除&quot;+&quot; </A>&quot;%>
9.//輸出資料格式化 "{0:F2}" 是格式 F2表示小數點後剩兩位
<%# DataBinder.Eval(Container, &quot;DataItem.PriceMoney&quot;,&quot;{0:F2}
&quot;) %>
10.//提取動態網頁內容
Uri uri = new Uri(&quot;http://www.51aspx.com/&quot;);
  WebRequest req = WebRequest.Create(uri);
  WebResponse resp = req.GetResponse();
  Stream str = resp.GetResponseStream();
  StreamReader sr = new StreamReader(str,System.Text.Encoding.Default);
  string t = sr.ReadToEnd();
  this.Response.Write(t.ToString());
11.//擷取" . "後面的字元
i.ToString().Trim().Substring(i.ToString().Trim().LastIndexOf(&quot;.&quot;)
+1).ToLower().Trim()
12. 開啟新的視窗並傳送參數：
傳送參數：
response.write(&quot;＜script＞window.open(’*.aspx?
id=&quot;+this.DropDownList1.SelectIndex+&quot;&amp;id1=&quot;+...+&quot;’)＜
/script＞&quot;)
接收參數：
string a = Request.QueryString(&quot;id&quot;);
string b = Request.QueryString(&quot;id1&quot;);
12.為按鈕添加對話方塊
Button1.Attributes.Add(&quot;onclick&quot;,&quot;return confirm(’確認?’)
&quot;);
button.attributes.add(&quot;onclick&quot;,&quot;if(confirm(’are you sure...?
’)){return true;}else{return false;}&quot;)
13.刪除表格選定記錄
int intEmpID = (int)MyDataGrid.DataKeys[e.Item.ItemIndex];
string deleteCmd = &quot;Delete from Employee where emp_id = &quot; +
intEmpID.ToString()
14.刪除表格記錄警告
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(&quot;onclick&quot;,&quot;return confirm(’
您是否確定要刪除這條資訊’);&quot;);
break;
default:
break;
}
}
15.點擊表格行連結另一頁
private void grdCustomer_ItemDataBound(object sender,
System.Web.UI.WebControls.DataGridItemEventArgs e)
{
//點擊表格開啟
if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType ==
ListItemType.AlternatingItem)
e.Item.Attributes.Add(&quot;onclick&quot;,&quot;window.open(’
Default.aspx?id=&quot; + e.Item.Cells[0].Text + &quot;’);&quot;);
}
雙擊表格串連到另一頁
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(&quot;ondblclick&quot;,
&quot;location.href=’../ShippedGrid.aspx?id=&quot; + orderItemID + &quot;’
&quot;);
}
雙擊表格開啟新一頁
if(e.Item.ItemType == ListItemType.Item || e.Item.ItemType ==
ListItemType.AlternatingItem)
{
string orderItemID =e.item.cells[1].Text;
e.item.Attributes.Add(&quot;ondblclick&quot;, &quot;open
(’../ShippedGrid.aspx?id=&quot; + orderItemID + &quot;’)&quot;);
}
16.表格超串連列傳遞參數
＜asp:HyperLinkColumn Target=&quot;_blank&quot; headertext=&quot;ID號&quot;
DataTextField=&quot;id&quot; NavigateUrl=&quot;aaa.aspx?id=’
＜%# DataBinder.Eval(Container.DataItem, &quot;資料欄位1&quot;)%＞’ &amp;
name=’＜%# DataBinder.Eval(Container.DataItem, &quot;資料欄位2&quot;)%＞’ /
＞
17.表格點擊改變顏色
if (e.Item.ItemType == ListItemType.Item ||e.Item.ItemType ==
ListItemType.AlternatingItem)
{
e.Item.Attributes.Add
(&quot;onclick&quot;,&quot;this.style.backgroundColor=’#99cc00’;
this.style.color=’buttontext’;this.style.cursor=’default’;&quot;);
}
寫在DataGrid的_ItemDataBound裡
if (e.Item.ItemType == ListItemType.Item ||e.Item.ItemType ==
ListItemType.AlternatingItem)
{
e.Item.Attributes.Add
(&quot;onmouseover&quot;,&quot;this.style.backgroundColor=’#99cc00’;
this.style.color=’buttontext’;this.style.cursor=’default’;&quot;);
e.Item.Attributes.Add(&quot;onmouseout&quot;,&quot;this.style.backgroundColor=
’’;this.style.color=’’;&quot;);
}
18.關於日期格式
日期格式設定
DataFormatString="{0:yyyy-MM-dd}"
我覺得應該在itembound事件中
e.items.cell["你的列"].text=DateTime.Parse(e.items.cell["你的
列"].text.ToString("yyyy-MM-dd"))
19.擷取錯誤資訊併到指定頁面
不要使用Response.Redirect,而應該使用Server.Transfer
e.g
// in global.asax
protected void Application_Error(Object sender, EventArgs e) {
if (Server.GetLastError() is HttpUnhandledException)
Server.Transfer(&quot;MyErrorPage.aspx&quot;);
//其餘的非HttpUnhandledException異常交給ASP.NET自己處理就okay了
}
Redirect會導致post－back的產生從而丟失了錯誤資訊，所以頁面導嚮應該直接在服
務器端執行，這樣就可以在錯誤處理頁面得到出錯資訊並進行相應的處理
20.清空Cookie
Cookie.Expires=[DateTime];
Response.Cookies(&quot;UserName&quot;).Expires = 0