分割字符串并将其分为两个字符串 [英] dividing string and assing it to two strings

问题描述

我正在将asp.net与c#一起使用.
我有一个下拉菜单.下拉菜单中的每个项目都有六个字符(AUDUSE，USDASD等).我希望当用户在下拉列表中选择任何项目时，将三个字符分配给一个字符串，将三个字符分配给其他字符串(字符串a = AUD，字符串b = USE等).

解决方案

string orig = "AUDUSE";

string a = orig.Substring(0, 3);
string b = orig.Substring(3, 3);

http://msdn.microsoft.com/en-us/library/aka44szs.aspx

  string  source = "  1234567890";
字符串 a =源.Substring( 0 ， 3 ); // 带有前3个字符
字符串 b = source.Substring( 3 ); // 取得前3个 

 <   asp:DropDownList     ID   ="     runat   =" 服务器"  AutoPostBack   真实" 
                   span>          ="   DropDownList1_SelectedIndexChanged" <   asp:ListItem  >  AUDUSE <  /asp:ListItem  > 
            <   asp:ListItem  >  USDASD <  /asp:ListItem  > 
        <  /asp:DropDownList  >  

代码:

 受保护的 无效 DropDownList1_SelectedIndexChanged(对象发​​件人，EventArgs e)
   {
       字符串 a = DropDownList1.SelectedItem.Text.Substring( 0 ， 3 )；
        int 长度=(DropDownList1.SelectedItem.Text.Length)- 3 ;
       字符串 b = DropDownList1.SelectedItem.Text.Substring( 3 ，length);
   } 

i am using asp.net with c#.
i have a dropdown. each item in dropdown has six characters(AUDUSE,USDASD etc.). i want that when user select any item in the dropdown so three characters are assigned to one string and three to other(string a=AUD,string b=USE etc). how is it possible.

解决方案

string orig = "AUDUSE";

string a = orig.Substring(0, 3);
string b = orig.Substring(3, 3);

http://msdn.microsoft.com/en-us/library/aka44szs.aspx

string source = "1234567890";
string a = source.Substring(0,3); // take the first 3 characters
string b = source.Substring(3);   // take everything after the first 3

Hi

<asp:DropDownList ID="DropDownList1" runat="server" AutoPostBack="True"

            onselectedindexchanged="DropDownList1_SelectedIndexChanged">
            <asp:ListItem>AUDUSE</asp:ListItem>
            <asp:ListItem>USDASD </asp:ListItem>
        </asp:DropDownList>

code:

protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
   {
       string a = DropDownList1.SelectedItem.Text.Substring(0,3);
       int length = (DropDownList1.SelectedItem.Text.Length) - 3;
       string b = DropDownList1.SelectedItem.Text.Substring(3,length);
   }

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