在窗口中自动生成不像0011的 [英] autogenerate no like 0011 in window

问题描述

String strUIDNo;
            int count;
            int iRowCount = ds.Tables[0].Rows.Count - 1;

            if (iRowCount > -1)
            {
                strUIDNo = ds.Tables[0].Rows[iRowCount]["UIDNo"].ToString();
                //count=strUIDNo.Length
                count = Convert.ToInt16(strUIDNo.Substring(3));
                count++;
                txtNo.Text = "000" + count;

            }
            else
            {
                txtNo.Text = "0001";
            }

我使用此代码自动生成no ..但此失败示例如果no为11，则应显示0011，但在我的代码00011中.我想像0011一样使用o/p其他任何替代方法

i Use this code for autogenerate of no..but this fail example if no is 11 it should show 0011 but in my code 00011.i want o/p like 0011 any other alternative

推荐答案

txtNo.Text = string.Format("####",count);

或

OR

txtNo.Text = string.Format("{0:d4}", count);

或

OR

txtNo.Text =  count.ToString().PadLeft(4, '0');

我认为您正在生成ID，例如0001/0011/0111/1111. br/>
使用此代码:

I think you are generating id like 0001/0011/0111/1111 .

use this code:

string strOutput = "";
int idLength = strUIDNo.Substring(3).Length;

if(idLength == 1)
 strOutput = "000" + count.ToString();
else if(idLength == 2)
 strOutput = "00" + count.ToString();
else if(idLength == 3)
 strOutput = "0" + count.ToString();
else
 strOutput = count.ToString();

then assign this value to your textbox.
txtNo.Text = strOutput;

在.net中使用字符串的pad属性

Use pad property of string in .net

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