Visual Basic

Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1.Click

    Try
        Dim currentDGV As DataGridView = getActiveDataGridView()

        Debug.WriteLine("Active DGV name is: " + currentDGV.Name)

    Catch ex As Exception

        Debug.WriteLine(ex.Message)
    End Try

End Sub

Function getActiveDataGridView() As DataGridView
    'Get which tab is active and then find the DataGridView on it
    For Each cont As Control In TabControl1.SelectedTab.Controls
        If TypeOf cont Is DataGridView Then
            Return cont
        End If
    Next

    'No datagridviewsfound
    Return Nothing

End Function

njtd wrote:

It's working.

double degrees = (180 / Math.PI) * radians;

ReadOut.Text = Convert.ToDouble(ReadOut.Text) * (180/Math.PI);

Convert.ToDouble(ReadOut.Text) * (180 / System.Math.PI)

My Readout.Text takes a value, then it finds Math.Sin(Convert.ToDouble(ReadOut.Text)) and gets the radian value, say 0.989 for sin(8) then if degeree is selected then it performs Math.Sin(Convert.ToDouble(ReadOut.Text)) * (180 / Math.PI) which is giving 56.6 for 0.989 * (180 / 3.1415) instead of giving 0.13917


If radians RadioButton is Checked

ReadOut.Text = System.Math.Sin(Convert.ToDouble(ReadOut.Text))

If degrees RadioButton is Checked

ReadOut.Text = System.Math.Sin(Convert.ToDouble(ReadOut.Text)) * (180 / System.Math.PI)

If Gradians RadioButton is Checked

ReadOut.Text = System.Math.Sin(Convert.ToDouble(ReadOut.Text)) * (200 / System.Math.PI )

They are entering simply a number.for eg., 8 is entered and if degree radio button is checked then it does the below code 

ReadOut.Text = System.Math.Sin(Convert.ToDouble(ReadOut.Text)) * (180 / System.Math.PI)


first it finds the Math.Sin(Convert.ToDouble(ReadOut.Text)) and gets the Sin value for 8 in radians and then it multiplies with (180 / Math.PI) to get the degrees and the new value is converted to string and displayed in the same TextBox. The whole process is done in a single statement

bool doesContain = yourString.Contains(searchString);