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This document is divided into about 5 logical sections starting with a feature and structure overview, followed by an overview of built‑in column and cell types.Next is an overview of working with data, followed by an overview of specific major features.column, its value is tested for validity by checking that it is not empty. If the event handler for the Cell Validating event finds that the value is an empty string, the Data Grid View prevents the user from exiting the cell until a non-empty string is entered. Note that some questions are duplicated in multiple sections based upon the section relevancy.The question and answers with code samples/snippets are contained in this documents only appendix to make for a one-stop shop of code. Nor does it represent the opinion of my dog, because I don’t have one. I have a project that I coppied the above code into. Data Keys[Row Index]["Customer ID"]in the Update event it would be something like:int Customer ID = Convert. Format Exception: Input string was not in a correct format.
A table can be displayed from a database in a Data Grid View, using the Data Adapter class and data logic.For a complete explanation of this code example, see Walkthrough: Validating Data in the Windows Forms Data Grid View Control.