What is the correct code for deleting a datagridview rows in vb.net?

Question

This is my code.

DataGridView1.Rows.RemoveAt(index)

The problem is when I click the delete button when there is no item in datagridview its having error.

So what is the correct code that even if you click the delete button without an item in datagridview will not error?

Please help me I'm beginner.

Answer 1

Hi @Kennyqui ,
Because there is an uncommitted new row at the end of Datafridview.
Please use the code above to ensure that the index value is within the deleteable range.

 If index >= 0 AndAlso index < DataGridView1.Rows.Count - 1 Then  
     DataGridView1.Rows.RemoveAt(index)  
 End If  

Hope the code above could be helpful.
Best Regards.
Jiachen Li

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Answer 2

The next code should work in certain circumstances:

If index >= 0 AndAlso index < DataGridView1.Rows.Count  Then
    DataGridView1.Rows.RemoveAt(index)
End If

Answer 3

lets say my Datagridview Name is DGV1

then use below code to delete all rows

Dim DGV1RowCount, I As Integer  
          
DGV1RowCount = DGV1.RowCount  
  
For I = 0 To DGV1RowCount - 1  
     DGV1.Rows.RemoveAt(0)  
Next