Question

for example dropdown box contain three things Simon,Jaison,Rahul..if you click Jaison will generate jaison as a text,,or Simon will generate Simon as a text

Answer 1

你的问题有些不清楚，但如果你试图从当前选定的项目中获取字符串（当选择发生变化时），那么...

处理SelectedIndexChanged事件：

private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
    string selectedText = comboBox1.SelectedItem.ToString();

    // Do whatever you want to do with it, for example...
    label1.Text = selectedText;
}

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