ثانوية خليص

Public Class Form1

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) 

Handles Button1.Click

        If TextBox1.Text = "" Or TextBox2.Text = "" Then

           ("الرجاء اكمال البيانات ") MsgBox

        Else

            TextBox3.Text = TextBox1.Text * TextBox2.Text

        End If

    End Sub

    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click

        If TextBox1.Text = "" Or TextBox2.Text = "" Then

           ("الرجاء اكمال البيانات ") MsgBox

        Else

            (TextBox3.Text = Val(TextBox1.Text) + Val(TextBox2.Text

     

  End If

    End Sub

    Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click

        If TextBox1.Text = "" Or TextBox2.Text = "" Then

           ("الرجاء اكمال البيانات ") MsgBox

        Else

            TextBox3.Text = TextBox1.Text - TextBox2.Text

        End If

    End Sub

    Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click

        If TextBox1.Text = "" Or TextBox2.Text = "" Then

           ("الرجاء اكمال البيانات ") MsgBox

        Else

            If TextBox2.Text = 0 Then

               "لا يقبل القسمة على صفر "=TextBox3.Text 

               () TextBox2.Focus

            Else

                TextBox3.Text = TextBox1.Text / TextBox2.Text

            End If

        End If

    End Sub

    Private Sub Button5_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button5.Click

  "" =   TextBox1.Text

 ""     =  TextBox2.Text 

 ""=        TextBox3.Text 

        ()TextBox1.Focus

    End Sub

    Private Sub Button6_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button6.Click

        End

    End Sub

End Class