1.如何把一個javascript 中的數組 從用戶端傳到伺服器端！ 2005-09-13
向skytear() 又學一招,嘿嘿.
<form id="Form1" method="post" runat="server">
<INPUT id="hidden1" type="hidden" runat="server">
<asp:Button id="Button7" runat="server" Text="獲得用戶端的數組"></asp:Button></P>
</form>
<script>
var array1 = new Array();
array1[0] ="你";
array1[1] = "我";
array1[2] ="他";
document.all.hidden1.value = array1;
</script>
--------------------------------------------------
private void Button7_Click(object sender, System.EventArgs e)
{
string strValue = this.hidden1.Value;
Response.Write("<br>數組"+strValue); //不使用數組直接輸出.
string [] result = hidden1.Value.Split(',');//形成數組
foreach(string str in result)
{
Response.Write("<br><br>數組:"+str);
}
}
2.求Regex（漢字，字母，數字 混合驗證） 2005-09-13
首位漢字，
2-4位為字母，
第5位漢字，
6-14位為數字，
最後一位為漢字
^[\u4e00-\u9fa5][a-zA-Z]{3}[\u4e00-\u9fa5]\d{9}[\u4e00-\u9fa5]$
3.如何動態在datagrid中加入欄位標題和列內容？ 2005-09-13
使用動態產生DataTable後,把DataTable綁定到DataGrid
<asp:datagrid id="DataGrid1" runat="server" Width="100%"></asp:datagrid>
/// <summary>
/// 根據條件綁定DataGrid
/// </summary>
/// <param name="strSql"></param>
private void DataBind(string strSql)
{
DataTable dt = new DataTable();
dt.Columns.Add(new DataColumn("欄位0標題", typeof(string)));
dt.Columns.Add(new DataColumn("欄位1標題", typeof(string)));
dt.Columns.Add(new DataColumn("欄位2標題", typeof(string)));
dt.Columns.Add(new DataColumn("欄位3標題", typeof(string)));
dt.Columns.Add(new DataColumn("欄位4標題", typeof(string)));
SqlCommand cmd2 = new SqlCommand(strSql,db.conn);
cmd2.Connection.Open();
SqlDataReader dr1 = cmd2.ExecuteReader();
while(dr1.Read())
{
DataRow dd;
dd = dt.NewRow();
dd[0] = "<INPUT type=\"checkbox\" name=\"mobilelist\" value="+dr1["txtemmobile"].ToString()+">";
dd[1] = "<a href=\"employeemodify.aspx?employee_id="+dr1["intemid"]+"\">"+dr1["txtemname"].ToString()+"</a>" ;
dd[2] = dr1["em_position"];
dd[3] = dr1["txtemmobile"];
dt.Rows.Add(dd);
}
cmd2.Connection.Close();
DataView dv = new DataView(dt);
DataGrid1.DataSource =dv;
DataGrid1.DataBind();
}
4.怎樣測試一個頁面的已耗用時間
(1)首先在web.config裡面配置trace節（該節屬於system.web節），配置如下：<trace enabled = "true"/>
接著可以訪問你要測試的頁面，訪問之後在開啟IE輸入http://yourhost/yourApplication/trace.axd就可以看到剛才訪問頁面時伺服器處理請求的詳細資料，這個是比較準確的測試方法。
(2)
DateTime startTime;
void Page_Init (Object sender, EventArgs e)
{
startTime = DateTime.Now;
//Response.Write(startTime+"<br/>");
//Response.Write("page init<br/>");
}
protected override void Render(HtmlTextWriter writer)
{
base.Render(writer);
DateTime endTime = DateTime.Now;
//Response.Write(endTime+"<br/>");
TimeSpan ts = endTime - startTime;
Response.Write("done in " + ts.Milliseconds.ToString());//ts.TotalMilliseconds.ToString());
}
5.c#中的日期差額:DateDiff在VB中有.
using System.TimeSpan:
DateTime dt = ...
DateTime d2 = ...
TimeSpan ts = dt - dt2;
n = ts.Hours;
6.檔案下載
/// <summary>
/// 檔案下載
/// </summary>
/// <param name="FullFileName"></param>
private void FileDownload(string FullFileName)
{
FileInfo DownloadFile = new FileInfo(FullFileName);
Response.Clear();
Response.ClearHeaders();
Response.Buffer=false;
Response.ContentType="application/octet-stream";
Response.AppendHeader("Content-Disposition","attachment;filename=" +HttpUtility.UrlEncode(DownloadFile.FullName,System.Text.Encoding.UTF8));
Response.AppendHeader("Content-Length",DownloadFile.Length.ToString());
Response.WriteFile(DownloadFile.FullName);
Response.Flush();
Response.End();
}
7.固定狀態列,開啟的視窗在同一個視窗中
<head>
<base onmouseover="window.status='★-- >>═→ D113音樂網 WWW.D113.COM 祝各位網友〖天天快樂〗!~ ⊙_⌒γ --★';return true">
<base target="play">
</head>
8http://crtvu.edu.cn/readddsx.html?id=1946 這種readddsx.html?id=1946是怎麼做的？ 2005-09-17
開啟IIS，在你要設定的網站的屬性頁面的虛擬目錄標籤上，點擊“應用程式設定(Application Settings)”下的“配置（Configuration..）”按鈕，在開啟的“應用程式配置（Application Configuration）”視窗中的“應用程式對應（App Mappings）”標籤頁中，點擊下面的“添加(Add..)”按鈕，在彈出的“添加/編輯應用程式尾碼映射（Add/Edit Application Extension Mapping）”視窗中，在“可執行程式（Executable）”右邊的文字框框中輸入 C:\WINNT\Microsoft.NET\Framework\v1.1.4322\aspnet_isapi.dll （檔案路徑會因.net架構版本的不同而不同，為安全起見，你可以在“應用程式對應（App Mappings）”標籤頁下的映射列表中雙擊“.aspx”，在彈出的視窗中選中它的“可執行程式（Executable）”文字框中的文本然後複製出來），在“尾碼名（Extension）”文字框中輸入你要添加的尾碼名“.html”，然後點擊確定儲存所有開啟的屬性視窗即完成IIS中的設定；
第二步：開啟你要配置的網站或虛擬目錄的根目錄下的web.config檔案，在<system.web>配置節下加入如下配置節：
<add verb="*" path="*.html" type="System.Web.UI.PageHandlerFactory"/>
儲存web.config檔案，然後將所有的aspx檔案的尾碼改為html，在瀏覽器中開啟看看是不是和aspx檔案一樣的效果！
http://www.ssite.cn/forums/104/ShowPost.aspx
adandelion
study English http://forums.devshed.com/ adandelion
我有一個datagrid綁定了記錄，
在每條記錄的右邊有一個imagebutton
當使用者點擊imagebutton時，就執行一個程式。
但此時如果我用F5重新整理頁面時，為什麼又執行了一次imagebutton事件呀
你要設定頁面的 smartnavigation=true 才不會讓地址欄累計曆史紀錄
UTF-8轉換成中文 2005-09-24
http://xmaspx.com/blogs/hackate/
private void Button2_Click(object sender, System.EventArgs e)
{
string utfinfo = "歡迎使用";
string gb2312info = string.Empty;
Encoding utf8 = Encoding.UTF8;
Encoding gb2312 = Encoding.GetEncoding("gb2312");
// Convert the string into a byte[].
byte[] unicodeBytes = utf8.GetBytes(utfinfo);
// Perform the conversion from one encoding to the other.
byte[] asciiBytes = Encoding.Convert(utf8, gb2312, unicodeBytes);
// Convert the new byte[] into a char[] and then into a string.
// This is a slightly different approach to converting to illustrate
// the use of GetCharCount/GetChars.
char[] asciiChars = new char[gb2312.GetCharCount(asciiBytes, 0, asciiBytes.Length)];
gb2312.GetChars(asciiBytes, 0, asciiBytes.Length, asciiChars, 0);
gb2312info = new string(asciiChars);
Response.Write(gb2312info);//歡迎使用
}
#########怎樣將字串轉換成可以執行的代碼??? 2005-10-03
http://community.csdn.net/Expert/topic/3985/3985223.xml?temp=.2579767
下面的把字串中的數字運算式求值:
double a = (double)Eval("1+1*2");
string s = a.ToString();
public static object Eval(string expression)
{
System.Data.DataTable table=new System.Data.DataTable();
System.Data.DataColumn Col=new System.Data.DataColumn("AAA",typeof(string),expression);
table.Columns.Add(Col);
table.Rows.Add(new object[] {""});
return table.Rows[0][0];
}
----------------------
Microsoft.JScript.Vsa.VsaEngine ve=Microsoft.JScript.Vsa.VsaEngine.CreateEngine();
object qswhEval3(string Expression){
return Microsoft.JScript.Eval.JScriptEvaluate(Expression,ve);
}
只需要添加Microsoft.JScript和Microsoft.Vsa兩個引用就OK,超簡潔....呵呵,多謝樓上朋友們的協助.......
按照時間命名
string fileName = System.DateTime.Now.ToString("yyyyMdHms");
DateTime.Now.ToString("yyyyMMddhhmmss") + DateTime.Now.Millisecond.ToString()
+IP地址.
祕密金鑰加密
#region 祕密金鑰加密
/// <summary>
/// 得到加密字串
/// </summary>
/// <param name="strText">要加密字串</param>
/// <param name="strEncrKey">密鑰</param>
/// <returns>加密後字串</returns>
public string DesEncrypt(string strText, string strEncrKey)//加密函數
{
byte[] byKey=null;
byte[] IV= {0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF};
try
{
byKey = System.Text.Encoding.UTF8.GetBytes(strEncrKey.Substring(0,strEncrKey.Length));
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
byte[] inputByteArray = Encoding.UTF8.GetBytes(strText);
MemoryStream ms = new MemoryStream();
CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(byKey, IV), CryptoStreamMode.Write) ;
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
return Convert.ToBase64String(ms.ToArray());
}
catch(System.Exception error)
{
return "error:" +error.Message+"\r";
}
}
/// <summary>
/// 得到解密後字串
/// </summary>
/// <param name="strText">解密字串</param>
/// <param name="sDecrKey">密鑰</param>
/// <returns>解密後字串</returns>
public string DesDecrypt(string strText,string sDecrKey)//解密函數
{
byte[] byKey = null;
byte[] IV= {0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF};
byte[] inputByteArray = new Byte[strText.Length];
try
{
byKey = System.Text.Encoding.UTF8.GetBytes(sDecrKey.Substring(0,8));
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
inputByteArray = Convert.FromBase64String(strText);
MemoryStream ms = new MemoryStream();
CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(byKey, IV), CryptoStreamMode.Write);
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
System.Text.Encoding encoding = new System.Text.UTF8Encoding();
return encoding.GetString(ms.ToArray());
}
catch(System.Exception error)
{
return "error:"+error.Message+"\r";
}
}
#endregion
把這個寫的類裡調用就 行了
禁止鍵盤輸入內容,禁止拷貝內容到某一輸入欄位(如使用者註冊中的確認輸入可以禁止拷貝前一個.).後一個是關閉IME的 2005-10-23
http://community.csdn.net/Expert/topic/4186/4186163.xml?temp=.1564295
<INPUT onmousedown="return false" onkeydown="return false" onpaste="return false" type="file" size="50" name="File" >
<INPUT ContentEditable="false" type="file" size="50" name="File" >
<INPUT readonly type="input" size="50" name="File" >
<INPUT style="ime-mode:disabled" type="file" size="50" name="File" > 關閉中文IME
只能輸入中文資訊
<asp:RegularExpressionValidator id="RegularExpressionValidator3" runat="server" ErrorMessage="RegularExpressionValidator"
ControlToValidate="TextBox5" ValidationExpression="[\u4e00-\u9fa5]+">
ArrayList轉換為字元數組的方法 2005-11-01
ArrayList array = new ArrayList();
for (int i=0;i<10;i++)
{
array.Add( "zhuzhu"+i.ToString());
}
//string [] strs = (string [])(array.ToArray(System.Type.GetType("System.String")));//方法1
string [] strs = new string[array.Count]; //方法二
array.CopyTo(strs);
foreach( string str in strs)
{
Response.Write("<br>"+str);
}
簡單隨即數
Random rd = new Random();
int nTempId = rd.Next(10000);
日期格式
time1.ToString("yyyy-MM-dd HH:mm:ss");
time1.ToString("yyyyMMddHHmmss");
匯出到Excel的亂碼問題的解決 2006-03-08
protected override void Render(HtmlTextWriter output)
{
Response.Clear();
Response.Buffer= true;
//Response.Charset="gb2312";
Response.AppendHeader("Content-Disposition","attachment;filename=employee.xls");
//rResponse.ContentEncoding=System.Text.Encoding.GetEncoding("gb2312");//設定輸出資料流為簡體中文
Response.ContentType = "application/ms-excel";//設定輸出檔案類型為excel檔案。
//下面是關鍵設定了它就不會亂碼了.也不知道為什麼
Response.Write("<meta http-equiv=Content-Type content=text/html;charset=gb2312>");
DataTable dt = new DataTable();
dt.Columns.Add(new DataColumn("員工姓名", typeof(string)));
dt.Columns.Add(new DataColumn("登陸帳號", typeof(string)));
dt.Columns.Add(new DataColumn("密碼", typeof(string)));
string sql0="select * from table1 where id=10000";
db.Sql=sql0;
SqlCommand cmd1 = new SqlCommand(sql0,db.conn);
cmd1.Connection.Open();
SqlDataReader dr2 = cmd1.ExecuteReader();
while(dr2.Read())
{
DataRow dr3;
dr3 = dt.NewRow();
dr3[0] = dr2["name"];
dr3[1] = dr2["LoginName"];
dr3[2] = dr2["Passowrd"];
dt.Rows.Add(dr3);
}
cmd1.Connection.Close();
DataView dv = new DataView(dt);
DataGrid1.DataSource =dv;
DataGrid1.DataBind();
DataGrid1.RenderControl(output);
}
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