C#:将字符串转换为对象引用

Question

基本上，按钮的标记属性是我需要动态引用的现有组合框的名称。这是处理多个按钮的通用函数。帮助

private void SQLButton(object sender, EventArgs e)
{
    magic(((Button)sender).Tag.ToString());
}

private void magic(string currentcombo)
{
    string CurrentText = (ComboBox).(currentcombo).Text;
}

Answer 1

您可以将 Tag 属性设置为实际的 ComboBox 并完全避免您的问题。

//code when defining your button...
{
     sqlButton.Tag = comboBoxA;  //instead of comboBoxA.Name
}

private void SQLButton(object sender, EventArgs e)
{
    Button button = sender as Button;
    ComboBox comboBox = button.Tag as ComboBox;

    if (comboBox == null ) 
    {...}
    else
    {
        magic(comboBox);
    }
}

private void magic(ComboBox currentcombo)
{
    string CurrentText = currentcombo.Text;
}