posted by Brad Prendergast at 6:39:00 PM
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Code MonkeyLabels: Information, Misc
A DataGridView, DataGridViewCheckBoxColumn, DataGridViewButtonColumn and DataColumn.
As with any “upgrade” new “things” are introduced. In this case I will refer to the DataGridView, DataGridViewCheckBoxColumn and the DataGridViewButtonColumn classes. The allows for the displaying of “data” in a grid (Note: when working with large amounts of data don’t forget to set the VirtualMode property). This source of the data can be anything that implements a IList, IListSource, IBindingList or IBindingListView interface. The data displayed doesn’t always have to be from a database, a one dimmensional array alos works well with a datagrid (take a look at the sample method PopulateDataGridView). It may sound intimidating, but this is all fairly straght forward.
namespace DrawInDataGrid1
...{
public partial class Form1 : Form
...{ private DataTable myTable; private DataGridViewCheckBoxColumn checkcolumn; private DataGridViewButtonColumn buttoncolumn; private DataColumn colItem1, colItem2, colItem3; private DataRow NewRow; private DataView myView; public Form1() ...{ InitializeComponent();
} private void Form1_Load(object sender, EventArgs e) ...{ // DataTable to hold data that is displayed in DataGrid myTable = new DataTable("myTable"); // the three columns in the table colItem1 = new DataColumn("CheckBox", Type.GetType("System.Boolean")); colItem2 = new DataColumn("Button", Type.GetType("System.String")); colItem3 = new DataColumn("String", Type.GetType("System.String")); // add the columns to the table myTable.Columns.Add(colItem1); myTable.Columns.Add(colItem2); myTable.Columns.Add(colItem3); checkcolumn = new DataGridViewCheckBoxColumn(false); checkcolumn.HeaderText = "CheckBox"; checkcolumn.DataPropertyName = "CheckBox"; buttoncolumn = new DataGridViewButtonColumn(); buttoncolumn.HeaderText = "Button"; buttoncolumn.DataPropertyName = "Button"; dataGridView1.Columns.Add(checkcolumn); dataGridView1.Columns.Add(buttoncolumn); // Fill in some data NewRow = myTable.NewRow(); NewRow[0] = true; NewRow[1] = "0"; NewRow[2] = "Test"; myTable.Rows.Add(NewRow); NewRow = myTable.NewRow(); NewRow[0] = false; NewRow[1] = "1"; NewRow[2] = "Next One"; myTable.Rows.Add(NewRow); // DataView for the DataGridView myView = new DataView(myTable); myView.AllowDelete = false; myView.AllowEdit = false; myView.AllowNew = false; // add an event to check for button click this.dataGridView1.CellContentClick += new System.Windows.Forms.DataGridViewCellEventHandler(this.dataGridView1_CellContentClick); // Assign DataView to DataGrid dataGridView1.DataSource = myView; } private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e) ...{ if (sender is DataGridView) ...{ if ((((DataGridView)sender).Columns[e.ColumnIndex] is DataGridViewButtonColumn) && (e.RowIndex >= 0)) ...{ MessageBox.Show(e.RowIndex.ToString()); } } } }
}
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