If the values for the control come from user input, be sure to validate the values to reduce security vulnerabilities.You can use this control in Windows Form using Wizard or programmatically. Select the components you want to reference, and then click OK. But unfortunately when i debugging this code an error is coming ” System. Data Table’ is a ‘type’ but is used like a ‘variable’ ” can you please suggest that how can i improve that……. Add a Data Grid View control and two Buttons on a Form. This will be something like…(please check out code syntax) Integer i = Data Grid View1. Dynamic SQL generation for the Update Command is not supported against a Select Command that does not return any key column information………. my first form is datagridview …side buttons is.,edit, delete,and close…now i want add some details then click add button then open another form….insert the data from add form…add form close after inserted data…..i want automatic refresh the form1…… When you click add button , close the datagrid form, open up the add data form. Introduction A Data Grid View control can be used to display data from a database.A table can be displayed from a database in a Data Grid View, using the Data Adapter class and data logic.