textbox相关问题

[NT5763]

textbox1输入满格后自动到textbox2，类推
按tab时从textbox1到textbox4

[兔子-顾问]

textchanged事件中判断一下，4个textbox的TextChanged都注册为一个事件，例如

public void TextBoxAll_TextChanged(object sender,EventArgs e)
{
    if((sender as TextBox).Text.Length > 5)//看你自己指定多少个了
    {
        SendKeys.Send("{TAB}");
    }
}

没开vs，如果代码敲错你对照大小写啥的改改。

[ZengHD]

        private void Form1_Load(object sender, EventArgs e)
        {
            textBox1.MaxLength = textBox2.MaxLength = textBox3.MaxLength = textBox4.MaxLength = 10;
            textBox1.TextChanged += new EventHandler(OnTextChanged);
            textBox2.TextChanged += new EventHandler(OnTextChanged);
            textBox3.TextChanged += new EventHandler(OnTextChanged);
            textBox4.TextChanged += new EventHandler(OnTextChanged);
        }

        private void OnTextChanged(object sender, EventArgs e)
        {
            if ((sender as TextBox).Text.Length >= (sender as TextBox).MaxLength)
            {
                SendKeys.Send("{TAB}");
            }
        }

[wuyq11]

设置 tabindex

private void textBox_TextChanged(object sender, EventArgs e)
{
TextBox txt=sender as TextBox;
if (txt.Text.Length >= 6)
{
this.Controls[""].Focus();
}
}
this.ActiveControl = textBox2;
SendKeys.Send("{TAB}");

[大明湖畔_帅锅]

应该很简单的啊？ 判断长度满足有 光标移到下一个textbox控件中。。。

[tx066415]

这就要看你输入多少字符了 你根据字符长度来判断 如果输入满了 就调用 下一个的Textbox的焦点方法啊

[fysy0000]

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace Ques_1
{
public partial class Form1 : Form
{
private const int textSize = 5;//设置你每个textbox输入上限
public Form1()
{
InitializeComponent();
}
//这样写不能保证像激活码那样在第一个复制进去全部刚好，要一个个的textbox输入，要是要那种的话，可以采用下面的另一种方式
private void Form1_Load(object sender, EventArgs e)
{
this.textBox1.MaxLength = textSize;
this.textBox2.MaxLength = textSize;
this.textBox3.MaxLength = textSize;
this.textBox4.MaxLength = textSize;
this.textBox1.TextChanged += new EventHandler(textBox1_TextChanged);
this.textBox2.TextChanged += new EventHandler(textBox2_TextChanged);
this.textBox3.TextChanged += new EventHandler(textBox3_TextChanged);
this.textBox4.TextChanged += new EventHandler(textBox4_TextChanged);
}

void textBox4_TextChanged(object sender, EventArgs e)
{

}

void textBox3_TextChanged(object sender, EventArgs e)
{
if (textBox3.Text.Length >= textSize)
{
this.textBox4.Focus();
}
}

void textBox2_TextChanged(object sender, EventArgs e)
{

if (textBox2.Text.Length >= textSize)
{
this.textBox3.Focus();
}
}

void textBox1_TextChanged(object sender, EventArgs e)
{
if (textBox1.Text.Length >= textSize)
{
this.textBox2.Focus();
}
}
}
}

[NT5763]

那删除时退格呢

[fangxiaofelix]

1楼、2楼已有正解！
LZ要学会举一反三！

[w5588660]

textbox的事件可以改！