Get element's text by TabIndex in c# winform

问题:

How to get element's text by TabIndex in Windows Forms? smth like:

"this.Controls.GetElementByTabindex(1).text"

Is it possible?

回答1:

Yes, it is possible with LINQ:

var text = this.Controls.OfType<Control>()
               .Where(c => c.TabIndex == index)
               .Select(c => c.Text)
               .First();

If you want to do it with extension method:

public static class MyExtensions
{
    public static string GetElementTextByTabIndex(this Control.ControlCollection controls,int index)
    {
        return controls.OfType<Control>()
                       .Where(c => c.TabIndex == index)
                       .Select(c => c.Text).First();
    }
}

string text = this.Controls.GetElementTextByTabIndex(1);

回答2:

try this.

   string tabText= tabControl1.SelectedTab.Text;
   MessageBox.Show(tabText);

回答3:

In case you don't want to use linq, this can do this:

int index = 1;    
string text;

foreach(Control control in Controls)
{
    if(control.TabIndex == index)
    {
        text = control.Text;
        break;
    }
 }