Visual Basic'net

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Visual Basic.net

• Conditionals

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Conditionals

• Used to decide the path a program takes
• Conditionals can have a true or false branch
• Conditionals can have both a true and false
  branch

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If Then (Syntax)

• The basic syntax of a conditional is
• If (condition) then
• (statements)
• End if
• note this is for a one branch only
• conditional

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Real World (Conditional)

• You can apply conditional to real
• world situations
• If its raining then
• wear a raincoat
• End if

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Programming Syntax

• A conditional in a program would appear as
• If intage 21 then
• lblLegal.Caption You are legal to drink!
• End if

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If Then Else (Syntax)

• You can have a conditional that has a
• true and false branch
• If (condition) then
• (statements)
• Else
• (statements)
• End if

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Real World (If Then Else)

• Here is a real world If, then, else
• Example
• If the buccaneers win then
• Im happy!
• Else
• Im sad
• End if

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If, Then, Else Statement
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Programming Syntax

• Here is an example of If, then, else in
• a program
• If intsales lt 200 then
• lblComment.Caption Try to sell more!
• Else
• lblComment.Caption Keep up the good work!
• End if

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Relational Operators

• Equal to ()
• Less than (lt)
• Greater than (gt)
• Not equal to (ltgt)
• Less than equal to (lt)
• Greater than equal to (gt)

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Multiple Elses

• You can have multiple branches within the same
  conditional statement
• If (condition) then
• (statement)
• Else if (condition) then
• (statement)
• Else (condition) then
• (statement)
• End if

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Multiple Branch If Statement