ArgumentOutOfRangeException occurs when hitting the remove button without selecting any item in the ListBox.
Public Class Person Public Property Name As String End Class Public Class Student Inherits Person Public Property RollNo As Integer Public Property Mark1 As Double Public Property Mark2 As Double Public Function GetTotal() As Double Return Mark1 + Mark2 End Function Public Function GetPercentage() As Double Return (GetTotal() / 200) * 100 End Function Public Function GetGrade() As String Dim pct As Double = GetPercentage() If pct >= 75 Then Return "Distinction" If pct >= 60 Then Return "First Class" If pct >= 50 Then Return "Second Class" Return "Fail" End Function End Class ' Form Code Context Private Sub btnProcess_Click(sender As Object, e As EventArgs) Handles btnProcess.Click Dim stud As New Student() stud.Name = txtName.Text stud.RollNo = Convert.ToInt32(txtRoll.Text) stud.Mark1 = Convert.ToDouble(txtM1.Text) stud.Mark2 = Convert.ToDouble(txtM2.Text) lblResult.Text = $"Name: stud.Name" & vbCrLf & $"Total: stud.GetTotal()" & vbCrLf & $"Grade: stud.GetGrade()" End Sub Use code with caution. Common Error & Fix
Accept five numbers into an array and display the largest one.
I can provide the targeted code snippets to patch your program immediately. Share public link
: Using common controls like Labels, TextBoxes, RadioButtons (for Gender), and CheckBoxes (for Hobbies) to collect user data.
: A form with text boxes and buttons to perform basic arithmetic operations like addition, subtraction, and multiplication.
Mastering VB.NET: A Complete Lab Guide for BCA Students (With Fixes)
By fixing these typical errors systematically, you can turn a "not working" lab program into a robust, evaluator-approved submission.
If you are working on a specific lab assignment right now, let me know: What is the ? What error message or unexpected behavior are you seeing? Are you using a database , GUI controls , or console outputs ?
BCA students often face specific errors that halt progress. Here are common issues and their fixes.
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ArgumentOutOfRangeException occurs when hitting the remove button without selecting any item in the ListBox.
Public Class Person Public Property Name As String End Class Public Class Student Inherits Person Public Property RollNo As Integer Public Property Mark1 As Double Public Property Mark2 As Double Public Function GetTotal() As Double Return Mark1 + Mark2 End Function Public Function GetPercentage() As Double Return (GetTotal() / 200) * 100 End Function Public Function GetGrade() As String Dim pct As Double = GetPercentage() If pct >= 75 Then Return "Distinction" If pct >= 60 Then Return "First Class" If pct >= 50 Then Return "Second Class" Return "Fail" End Function End Class ' Form Code Context Private Sub btnProcess_Click(sender As Object, e As EventArgs) Handles btnProcess.Click Dim stud As New Student() stud.Name = txtName.Text stud.RollNo = Convert.ToInt32(txtRoll.Text) stud.Mark1 = Convert.ToDouble(txtM1.Text) stud.Mark2 = Convert.ToDouble(txtM2.Text) lblResult.Text = $"Name: stud.Name" & vbCrLf & $"Total: stud.GetTotal()" & vbCrLf & $"Grade: stud.GetGrade()" End Sub Use code with caution. Common Error & Fix
Accept five numbers into an array and display the largest one. vb net lab programs for bca students fix
I can provide the targeted code snippets to patch your program immediately. Share public link
: Using common controls like Labels, TextBoxes, RadioButtons (for Gender), and CheckBoxes (for Hobbies) to collect user data. I can provide the targeted code snippets to
: A form with text boxes and buttons to perform basic arithmetic operations like addition, subtraction, and multiplication.
Mastering VB.NET: A Complete Lab Guide for BCA Students (With Fixes) Mastering VB
By fixing these typical errors systematically, you can turn a "not working" lab program into a robust, evaluator-approved submission.
If you are working on a specific lab assignment right now, let me know: What is the ? What error message or unexpected behavior are you seeing? Are you using a database , GUI controls , or console outputs ?
BCA students often face specific errors that halt progress. Here are common issues and their fixes.
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