Datagridview rowvalidating event example Adult horny teen cam to cam chat free
I'm Developing a Windows Forms application with a datagridview bound to a datasource.In the process of validating some cell values the Row Validating Event does not fire when navagation moves off the row. However, if i change a cell value, Tab back to the left to another cell on the same row, then use the mouse to click on a Previous row above the changed row..... Example:: A B C D 1 x x x x 2 x x x x 3 x x x x If I change the value in C2, then backtab (or mouse click) back to B2, Then mouse click on any cell in row 1, the Row Validation Event does not fire and thus the changed value in C2 does not get evaluated. I am using Cell Validating but if one cell is dependant on another I cannot navagate away from the invalid cell to change the parent cell controlling the validation logic.For example, if a user types in alpha characters (like "abc") into a numeric field, a data conversion error occurs before Row Validation.In this case we need a "global" error checker to detect data conversion errors.The Data Grid View is a very powerful windows form control for providing a user interface to tabular data.It has the initial "look and feel" of an Excel spreadsheet.
Both columns may have a valid entry for each independent cell but there are only certain valid "Divisions" for a given "Company".
Next, you'll need to add a Data Grid View to a form. ' create new style object Dim style As New Data Grid View Cell Style ' set the alignment to the right (for numbers) style. Middle Right ' add a wee bit of padding to the right side Dim p As New Windows. This allows you to use a "business rule" to validate the user input.
From inside the Form Designer, you should see a very small triangle at the upper right-hand corner of the Data Grid View control. For example, if the Units On Hand column can never be a negative number,you could write a validating rule that looks to see if the value is negative prior to committing the changes to that row.
The concept is to have a button column which the user could click if he/she input the wrong ID and select the Correct One.
The problem, if the user inputs an invlaid Product ID, Cell Validating Fires and prevents the user from navagating away and clicking the Button which would display the valid options to select from. Note-I'm using a second datagridview instead of a combobox column in my initial DGV because i what to provide more information for the user to have availble like description, price, Onhand qty, etc..