Col 5 and Col 6 have neither colId or field so the grid generates column IDs. Modern grids are complex and are usually packed with a large set of features like data selection, excel style filtering, sorting, paging, grouping, templating. Then, when defining our column definitions in our app, we will replace ColDef with. The grid appends '_1' to Col 4 to make the ID unique. The grid appends '_1' to Col 2 to make the ID unique. You would have to remove the column then add it back: DataTable dt new DataTable () dataGridView1.DataSource dt DataGridViewImageColumn imageCol new DataGridViewImageColumn () imageCol.Name 'targetcolumn' imageCol.DisplayIndex. Open the example in a new tab and observe the output in the dev console. Learn about different column types support (Text, Numeric, DateTime, ComboBox and so on) in Syncfusion WinForms DataGrid (SfDataGrid) control and more. If you are using AutoGenerateColumns then you can't change their types after binding the source. In the example below, columns are set up to demonstrate the different ways IDs are generated. Finally, the ID is ensured to be unique by appending '_n' if necessary, where n is the first positive number that allows uniqueness. If neither colId nor field exists then a number is assigned. If both colId and field exist then colId gets preference. If the user provides colId in the column definition, then this is used, otherwise the field is used. By default, the built in editing in the data grid automatically supplies the proper. if two columns have the same field, or if you are using valueGetter instead of field) then it is useful to understand how column IDs are generated. To mark a property as not required, set its Required property to false. If you are using the API and the column IDs are a little complex (e.g. The following example shows a simple grid with 3 columns defined: const gridOptions = Column IDsĮach column generated by the grid is given a unique Column ID, which is used in parts of the Grid API. Columns are positioned in the grid according to the order the Column Definitions are specified in the Grid Options. Each column in the grid is defined using a Column Definition ( ColDef).
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