如何更改表单中某种类型的子控件的属性？ [英] How do I change the property of one type of Child Controls in a form?

问题描述

在VB WindowsForms 应用程序中，我想更改许多 DomainUpDown控件的值，它们是 控件或面板中的。

我是一个短代码。

 对于每个项目作为DomainUpDown在GroupBox1.Controls 
 item.Value = 0 
 Next 
  

但显示错误，Value不是'System.Windows.Forms.DomainUpDown'的成员。

帮助！

解决方案

DomainUpDown 没有任何属性，如 Value 这个控件的功能与 ComboBox 相同。

  item.Text =0
 
您可以分配的多个属性Dim iIndex As Integer = 0 
 item.SelectedIndex = iIndex // SelectedIndex将具有整数类型值
 
 item.SelectedItem =0// SelectedItem将具有对象类型值
  

In a VB WindowsForms Application,

I want to change the value of many DomainUpDown controls which are inside a GroupBox Control or a Panel.

I though of a short code.

For Each item As DomainUpDown In GroupBox1.Controls
        item.Value = 0
Next

But Shows me error, "Value' is not a member of 'System.Windows.Forms.DomainUpDown'.

Help!

解决方案

DomainUpDown doesn't have any property like Value This control will perform same as ComboBox. There are several property that you can assign to change the value.

item.Text = "0"

Dim iIndex As Integer = 0
item.SelectedIndex = iIndex   //SelectedIndex will have integer type value

item.SelectedItem = "0"  //SelectedItem will have object type value

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