动态文字框

问题描述

在我的项目中，我必须插入供应商项目信息.

为此，我需要动态生成文本框.
最初，我应该有一行四个文本框和一个添加按钮，用于生成新行的文本框.

我还必须在这些文本框中进行一些计算:

第4个文本框的值= 2个文本框值+第3个文本框

请帮我完成这项任务！

谢谢！

In my project I have to insert vendor item information.

For that I need dynamic generation of textboxes.
Initially I should have a row of four textboxes and one add button for generating new row of textboxes.

I also have to do some calculations in those textboxes:

Value of 4th textbox = 2textbox value + 3rd textbox

Please help me with this task!

Thank you!

推荐答案

//On the click event of the button , Write this:

 TextBox myNewTextBox=new TextBox();

 myNewTextBox.Text=String.Concat(TextBox2.Text,TextBox3.Text);
 // Assuming you have a panel pnl
 pnl.Controls.Add(myNewTextBox);

TextBox[] newRow = new TextBox[]{
     new TextBox(),
     new TextBox(),
     new TextBox(),
     new TextBox()
}

步骤2.调整每个文本框的属性以适合您的显示需求:

Step 2. Adjust the properties on each of the TextBoxes to fit your display needs:

newRow[0].Location = new Point(x,y);
newRow[0].Size = new Size(w,h);
newRow[0].Visible = true;
...etc.

步骤3.将事件处理程序挂接到TextBoxes(对于最初的四个TextBoxes，这些事件处理程序应该已经存在):

Step 3. Hook the event handlers to the TextBoxes (these event handlers should already exist for the initial four TextBoxes):

newRow[0].TextChanged += new TextChangedEventHandler(TextBox1_TextChanged);
newRow[1].TextChanged += new TextChangedEventHandler(TextBox2_TextChanged);
...etc.

步骤4.添加到表单/控件:

Step 4. Add to form/control:

form1.Controls.AddRange(newRow);

这篇关于动态文字框的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！