Button use datagridview cellvalidating vb net
You would test whether the new value was one of those allowed and cancel the change if it wasn't. " Videos: VB | C# VBForums Database Development FAQ My Code Bank Submissions: VB | C# My Blog: Data Among Multiple Forms (3 parts) | WP8 Turnstile Feather Transition with Pivot Control Beginner Tutorials: VB | C# | SQL By the way, if you validate Mail Type column as you are and the user wants to specify email then you are basically forcing them to deselect E first, then enter an email address and then select E again. " Videos: VB | C# VBForums Database Development FAQ My Code Bank Submissions: VB | C# My Blog: Data Among Multiple Forms (3 parts) | WP8 Turnstile Feather Transition with Pivot Control Beginner Tutorials: VB | C# | SQL [QUOTE=jmcilhinney;4633471]If focus is not leaving the cell then how is e. What EXACTLY are you expecting and what EXACTLY are you seeing? So it would be ready for them to enter a correct value or enter and leave it blank so they don't have to back space to clear the incorrect value.
Cancel = True Msg Box("Email must not be empty if Mail Type is E.") End If End If End Select End If End Sub Of course.
In the Cell Validating event handler you would test the data to make sure that it was actually numeric and reject it if it wasn't, i.e. Cancel to True to prevent the user leaving that cell. Cancel is not set to True in the Cell Validating event handler then Cell Validated is raised before the cell actually loses focus.
That's when you would modify the data, safe in the knowledge that it is indeed valid.
The Data Grid View control is highly configurable and extensible, and it provides many properties, methods, and events to customize its appearance and behavior. Sql Client Public Class Form1 Private Sub Button1_Click(By Val sender As System.
The Data Grid View control provides Text Box, Check Box, Image, Button, Combo Box and Link columns with the corresponding cell types.
In the Cell Validating Event, I wish to format the numeric value using 4 decimal places. Private Sub c DGV_Cell Validating(sender As Object, e As Data Grid View Cell Validating Event Args) Handles c DGV. Error Message = "" If bln Hit Enter Then bln Hit Enter = False str Cell Value = c DGV. You appear to be actually modifying the value itself, which is not formatting. The point of the Cell Validating event is for you to test the contents of the cell and determine whether it satisfies one or more conditions and reject it if it doesn't. Error Message) End Sub Um, the Cell Validating event is not for formatting; it's for validating. Row Index End If Case 3 'This is the Output column If e. Text, 0), g Load Decimal Places) Else If row IDX 0 And Is Nothing(c DGV. Text, s Load Amt), g Load Decimal Places) End If End If End Select c DGV. How could the Value have changed if doing so would break that binding? Column Index Case 2 'This is the Load Value column If e. Text) End If End If str Cell Value = Get Decimal Places(get Output Null(Real Read Mode, cmb Output Unit. ", e) bln Error = True Else s Load Amt = Get Load Amount(col IDX - 1, row IDX) str Cell Value = Get Decimal Places(get Output(Real Read Mode, cmb Output Unit. What if the column was bound to a numeric property and the input wasn't numeric?