Updating datagridview c
In some of the functions of the Player class, we check if an item exists in the player’s inventory – for example, to see if they have all the items needed to complete a quest. Exists() method on the List properties to do this check. Step 4: Now that the business objects are ready, we can bind them to the UI. We currently call Update Inventory List In UI(), to update the inventory. We also don’t want the binding to automatically generate the data grid’s columns.
Just like with the databinding for the integer properties, we’re going to perform the databinding in Super Adenture’s constructor method, delete the old function, and delete any lines where we call the old function. If this value was set to “true”, the datagrid would create a column for each property of Inventory Item.
NET framework is that the different list/collection datatypes have different ways of working with them. “Any” will return a “true”, if any of the items in the Binding List match the criteria we are looking for, just like “Exists” does for a List property or variable. Add(new Data Grid View Text Box Column ); dgv Inventory. Add(new Data Grid View Text Box Column ); These lines configure the dgv Inventory datagrid view.
Because we switched from a List datatype, to a Binding List, we need to make a couple other changes. So, in the Player class, use Ctrl-F to search for “Inventory. You should find this in two places: the Has Required Item To Enter This Location() function and the Has All Quest Completion Items() function. We say that we don’t want to show row headers – the blank squares to the left of each row.
Add some UI controls and arrange them as in the following figure.The "change" button updates the cell value of Data Set with the Text Box value and the "Update" button saves the updated value in the Database. Introduction A Data Grid View control can be used to display data from a database.In this section, you will add a button that enables client data changes to be saved back to the database.The following section will show you how to test updating, inserting, and deleting the data.