字符串和字符数组之间的转换

privatevoid TestStringChars()

{ 

   string str =
"mytest"; 

   char[] chars = str.ToCharArray(); 

   this.textBox1.Text =
""; 

   this.textBox1.AppendText("Length of \"mytest\" is " + str.Length
+ "\n"); 

   this.textBox1.AppendText("Length of char array is " + chars.Length +
"\n"); 

   this.textBox1.AppendText("char[2] = " + chars[2] +
"\n"); 

 }