在c＃HELP中填充文本框 [英] populating a textbox in c# HELP

问题描述

hi guys



我正在创建一个带有Windows窗体的计算器。我不希望用户使用计算机键盘输入数据。所以我在表单上创建了许多按钮，供用户点击它们进入文本框输入数据。



如何使用数字填充文本框？

例如：

  private   void  button1_Click（ object  sender，EventArgs e）
 {
 textBox1.Text =   7; 
} 
 
  private   void  button2_Click（ object  sender，EventArgs e）
 {
 textBox1.Text =   8; 
} 

在上面的代码中，理想情况下，用户点击按钮1和按钮2然后文本框将是填充数字78

但似乎当我点击按钮1时，文本框中出现7这是一件好事，但当我点击按钮2时，7结束写的，变成8..有谁知道我如何填充文本框？



谢谢

Abz

解决方案

你正在填充一个文本框！



重点是你每次都将文本设置为数字，什么你想做的是追加号码...试试这个

 textBox1.Text + =7; 

或

 textBox1.Text = textBox1.Text +   7\" ; 

hi guys

i am creating a calculator with windows forms. I don't want users to enter data using the computer keyboard. So I have created a number of buttons on my form for the users to click them to enter into the textboxes for entering data.

How do i populate a textbox with numbers?
for example :

private void button1_Click(object sender, EventArgs e)
       {
           textBox1.Text = "7";
       }

       private void button2_Click(object sender, EventArgs e)
       {
           textBox1.Text = "8";
       }

in the above code, Ideally i wyd the user to click button 1 and button 2 then the textbox will be populated with the number "78"
but it seems when i click button 1 , "7" appears in the text box which is a good thing, but when i click button 2, "7" is over written and becomes "8".. does anyone know how i can populate a textbox?

Thank You
Abz

解决方案

Well you are populating a textbox!

The point is you are setting the text to the number each time, what you want to do is append the number ... try this

textBox1.Text += "7";

or

textBox1.Text = textBox1.Text + "7";

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