electedIndexChanged事件中更改comboBox

electedIndexChanged事件中更改comboBox

本文介绍了如何在comboBox.SelectedIndexChanged事件中更改comboBox.Text?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

代码示例:

  private void comboBox_SelectedIndexChanged(object sender,EventArgs e)
{
if (某些条件)
{
comboBox.Text =new string
}
}

我的问题是comboBox文本总是显示选定的索引的字符串值,而不是新的字符串。

解决方案

这段代码应该可以工作...

  public Form1()
{
InitializeComponent();

comboBox1.Items.AddRange(new String [] {Item1,Item2,Item3});
}

private void comboBox1_SelectedIndexChanged(object sender,EventArgs e)
{
String text =You selected:+ comboBox1.Text;

BeginInvoke(new Action(()=> comboBox1.Text = text));
}

希望它有助于... :) / p>

Code example:

private void comboBox_SelectedIndexChanged(object sender, EventArgs e)
{
    if(some condition)
    {
        comboBox.Text = "new string"
    }
}

My problem is that the comboBox text always shows the selected index's string value and not the new string. Is the a way round this?

解决方案

This code should work...

public Form1()
{
    InitializeComponent();

    comboBox1.Items.AddRange(new String[] { "Item1", "Item2", "Item3" });
}

private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
    String text = "You selected: " + comboBox1.Text;

    BeginInvoke(new Action(() => comboBox1.Text = text));
}

Hope it helps... :)

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09-03 00:20