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How to group the DataGridView by a column?

Article Information

Article relates to VIBlend DataGridView for WinForms

How To

Bind the data grid and group its data.

Solution

To achieve this, follow these steps:

1. Create a new instance of the vDataGridView via drag and drop from the toolbox or create it programmatically.

2. Drag and drop a new NorthWind data set. You can find the NWind.mdb in the VIBlend Controls for WinForms installation package.

3. Drag and drop Categories and Products table adapters.

4. Fill the Categories and Products tables.

C#
this.categoriesTableAdapter1.Fill(this.nwindDataSet1.Categories);
this.productsTableAdapter1.Fill(this.nwindDataSet1.Products);

VB .NET   

Me.categoriesTableAdapter1.Fill(Me.nwindDataSet1.Categories)
Me.productsTableAdapter1.Fill(Me.nwindDataSet1.Products)

5. Create the DataGrid’s BoundFields

C#

Grid1.BoundFields.Add(new BoundField("Product Name", "ProductName"));
Grid1.BoundFields.Add(new BoundField("Unit Price", "UnitPrice"));
Grid1.BoundFields.Add(new BoundField("Category", "CategoryName"));
Grid1.BoundFields.Add(new BoundField("Description", "Description"));

VB .NET

Grid1.BoundFields.Add(New BoundField("Product Name", "ProductName"))
Grid1.BoundFields.Add(New BoundField("Unit Price", "UnitPrice"))
Grid1.BoundFields.Add(New BoundField("Category", "CategoryName"))
Grid1.BoundFields.Add(New BoundField("Description", "Description"))

6. Add the data grid’s grouping column and set the GroupingEnabled property to true.

C#
Grid1.GroupingColumns.Add(new BoundField("Category", "CategoryName"));
Grid1.GroupingEnabled = true;

VB .NET
Grid1.GroupingColumns.Add(New BoundField("Category", "CategoryName"))
Grid1.GroupingEnabled = True

7. Finally, bind the data grid to the data source.

C#

DataTable table = new DataTable();
string categoryName = "CategoryName";
string description = "Description";
table.Merge(this.nwindDataSet1.Products);
table.Columns.Add(this.nwindDataSet1.Categories.CategoryNameColumn.Caption);
table.Columns.Add(this.nwindDataSet1.Categories.DescriptionColumn.Caption);

for (int i = 0; i < table.Rows.Count; i++)
{
	int id = (int)table.Rows[i]["CategoryID"];
	if (id < this.nwindDataSet1.Categories.Rows.Count)
	{
		table.Rows[i][categoryName] = this.nwindDataSet1.Categories.Rows[id][categoryName];
		table.Rows[i][description] = this.nwindDataSet1.Categories.Rows[id][description];
	}
}
        
Grid1.DataSource = table;
Grid1.DataBind();
Grid1.ColumnsHierarchy.AutoResize(AutoResizeMode.FIT_ALL);

VB .NET

Dim table As DataTable = New DataTable()
Dim categoryName As String = "CategoryName"
Dim description As String = "Description"
table.Merge(Me.nwindDataSet1.Products)
table.Columns.Add(Me.nwindDataSet1.Categories.CategoryNameColumn.Caption)
table.Columns.Add(Me.nwindDataSet1.Categories.DescriptionColumn.Caption)

Dim i As Integer = 0
Do While i < table.Rows.Count
Dim id As Integer = CInt(Fix(table.Rows(i)("CategoryID")))

If id < Me.nwindDataSet1.Categories.Rows.Count Then
	table.Rows(i)(categoryName) = Me.nwindDataSet1.Categories.Rows(id)(categoryName)
	table.Rows(i)(description) = Me.nwindDataSet1.Categories.Rows(id)(description)
End If
i += 1
Loop

Grid1.DataSource = table
Grid1.DataBind()
Grid1.ColumnsHierarchy.AutoResize(AutoResizeMode.FIT_ALL)

VIBlend DataGridView for WinForms Grouped by Column

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