动态添加按钮及关联方法(带参数)
动态添加按钮及关联方法(带参数)
先写了如下方法
1protected void Page_Load(object sender, EventArgs e)
2 {
3 Button LB = new Button();
4 LB.Text = "测试";
5 //DIV1是页面上一个DIV
6 DIV1.Controls.Add(LB);
7 LB.Click += new EventHandler(Test);
8 }
9 protected void Test(object sender, EventArgs e)
10 {
11 Response.Write("<script>alert('This is a test');</script>");
12 }
13
但上面的方法没有传传递参数,只能调用一个方法,当然用极端方法可以把要传的参数赋给按钮的ID或什么属性的带过去,但不是最好的方法,于是又找到如下方法:2 {
3 Button LB = new Button();
4 LB.Text = "测试";
5 //DIV1是页面上一个DIV
6 DIV1.Controls.Add(LB);
7 LB.Click += new EventHandler(Test);
8 }
9 protected void Test(object sender, EventArgs e)
10 {
11 Response.Write("<script>alert('This is a test');</script>");
12 }
13
1 protected void Page_Load(object sender, EventArgs e)
2 {
3 Button LB = new Button();
4 LB.Text = "测试";
5 LB.CommandName = "1";
6 LB.CommandArgument = "5";
7 DIV1.Controls.Add(LB);
8 LB.Command += new CommandEventHandler(this.Test);
9 }
10 protected void Test(object sender, CommandEventArgs e)
11 {
12 Response.Write("<script>alert('"+e.CommandArgument+"|"+e.CommandName+"');</script>");
13 }
14
2 {
3 Button LB = new Button();
4 LB.Text = "测试";
5 LB.CommandName = "1";
6 LB.CommandArgument = "5";
7 DIV1.Controls.Add(LB);
8 LB.Command += new CommandEventHandler(this.Test);
9 }
10 protected void Test(object sender, CommandEventArgs e)
11 {
12 Response.Write("<script>alert('"+e.CommandArgument+"|"+e.CommandName+"');</script>");
13 }
14
这样就可以通过按钮的CommandName 和CommandArgument 进行参数传递了。
问题:正在做一个ASP到ASP.NET的商城改版,原来的注册用户需要保留,原来的用户密码是ASP的MD5,32位加密,记得ASP的MD5与ASP.NET的MD5加密结果并不相等,于是试了下:
原来用的一个MD5加密方法:
/// <summary>
/// MD5加密算法
/// </summary>
/// <param name="md5str">要加密的字符串</param>
/// <returns>md5加密结果</returns>
public static string Getmd5(string md5str)
{
byte[] data;
string ret = "";
data = System.Text.Encoding.UTF8.GetBytes(md5str);
MD5CryptoServiceProvider MD5OBJ = new MD5CryptoServiceProvider();
byte[] md5byte = MD5OBJ.ComputeHash(data);
for (int i = 0; i < md5byte.Length; i++)
{
ret += md5byte[i].ToString("x").PadLeft(2, '0');
}
return ret;
}
/// MD5加密算法
/// </summary>
/// <param name="md5str">要加密的字符串</param>
/// <returns>md5加密结果</returns>
public static string Getmd5(string md5str)
{
byte[] data;
string ret = "";
data = System.Text.Encoding.UTF8.GetBytes(md5str);
MD5CryptoServiceProvider MD5OBJ = new MD5CryptoServiceProvider();
byte[] md5byte = MD5OBJ.ComputeHash(data);
for (int i = 0; i < md5byte.Length; i++)
{
ret += md5byte[i].ToString("x").PadLeft(2, '0');
}
return ret;
}
后来无意中发现有更简单的实现方法
/// <summary>
/// MD5加密算法
/// </summary>
/// <param name="md5str">要加密的字符串</param>
/// <returns>md5加密结果</returns>
public static string GetMd5(string md5str)
{
return System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(md5str, "MD5");
}
/// MD5加密算法
/// </summary>
/// <param name="md5str">要加密的字符串</param>
/// <returns>md5加密结果</returns>
public static string GetMd5(string md5str)
{
return System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(md5str, "MD5");
}
用第二种方法输出"admin"的MD5加密结果为:
21232F297A57A5A743894A0E4A801FC3
与ASP MD5加密的16和32位加密结果比较:
16位加密(7a57a5a743894a0e)
32位加密(21232f297a57a5a743894a0e4a801fc3)
发现与32位加密结果相同,只是字母大小写不同,16位加密结果只是从32位加密结果中取了中间16个,于是:
/// <summary>
/// ASP MD5加密算法
/// </summary>
/// <param name="md5str">要加密的字符串</param>
/// <param name="type">16还是32位加密</param>
/// <returns>Asp md5加密结果</returns>
public static string GetAspMd5(string md5str,int type)
{
if (type == 16)
{
return System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(md5str, "MD5").Substring(8, 16).ToLower();
}
else if (type==32)
{
return System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(md5str, "MD5").ToLower();
}
return "";
}
/// ASP MD5加密算法
/// </summary>
/// <param name="md5str">要加密的字符串</param>
/// <param name="type">16还是32位加密</param>
/// <returns>Asp md5加密结果</returns>
public static string GetAspMd5(string md5str,int type)
{
if (type == 16)
{
return System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(md5str, "MD5").Substring(8, 16).ToLower();
}
else if (type==32)
{
return System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(md5str, "MD5").ToLower();
}
return "";
}
上面一个方法实现了在.NET里的ASP MD5加密结果。