Confusing to my condition if else using two conditions - vb.net

Question

How Can I use "AND" in if else condition.
1st Condition: (Val(TextBox9.Text) > Val(time.Text))
2nd Condition:
((Format(CDate(Strings.Right(TextBox9.Text.Trim, 11)))) >
(Format(CDate(Strings.Right(time.Text.Trim, 11)))))
I have a problem in my statement condition, it is always execute when the first condition becomes true. I want my condition execute when my two condition becomes true, My big problem is when my 1st condition becomes true and my second condition is false it still executing which is wrong, the output should be "Second Condition is false".
If (Val(TextBox9.Text) > Val(time.Text)) AndAlso
((Format(CDate(Strings.Right(TextBox9.Text.Trim, 11)))) >
(Format(CDate(Strings.Right(time.Text.Trim, 11))))) Then
Console.writeline("Execute both condition is true")
else
Console.writeline("Second Condition is false")
end if

Answer 1

If you are having trouble diagnosing the issue with your conditionals, break them up into several lines, to help you better understand what you are comparing. For example you could do this:
Dim firstCompare = Val(TextBox9.Text) > Val(Time.Text)
Dim formattedTB9 = Format(CDate(Strings.Right(TextBox9.Text.Trim, 11)))
Dim formattedTime = Format(CDate(Strings.Right(Time.Text.Trim, 11)))
Console.WriteLine(String.Format("{0} > {1}", formattedTB9, formattedTime))
Dim secondCompare = formattedTB9 > formattedTime
If (firstCompare) AndAlso (secondCompare) Then
Console.WriteLine("Execute both condition is true")
Else
Console.WriteLine("One of the conditions is false")
End If
Now looking at your code, are you sure you want to be comparing formatted strings of dates and times you just converted from a textbox? Now that things are broken up, leverage the debugger to determine what values you are comparing and focus on tweaking it to be exactly what you want. Use the correct datatypes when comparing objects and ensure you understand how functions like Val and CDate work.

Answer 2

This is not a good way to compare two dates and times. You should first compare dates (not dates converted to strings) and only if they are same compare times. That's because if one date is larger or smaller than other, time doesn't matter. But when they are same, time is important. And you shouldn't compare strings, because when it's formated mm/dd/yyyy, months and days are more important for comparing than years.
If CDate(Strings.Right(TextBox9.Text.Trim, 11))>CDate(Strings.Right(time.Text.Trim, 11)) Then
Console.writeline("Date1 is bigger")
elseif CDate(Strings.Right(TextBox9.Text.Trim, 11))=CDate(Strings.Right(time.Text.Trim, 11))
If Val(TextBox9.Text) > Val(Time.Text) Then
Console.writeline("Date1 is bigger")
elseif Val(TextBox9.Text) = Val(Time.Text)
Console.writeline("Dates are equal")
else
Console.writeline("Date1 is smaller")
end if
else
Console.writeline("Date1 is smaller")
end if