Row and Column count of data grid in C#

The DataGrid.Items property returns a DataGridItemCollection representing the DataGridItems in the DataGrid.

Each DataGridItem is representative of a single row in the rendered table. Also, the DataGridItem exposes a Cells property which represents the no. of tablecells (in other words, the columns) in the rendered table.

int rowCount = myGrid.Items.Count;

// Get the no. of columns in the first row.
int colCount = myGrid.Items[0].Cells.Count;

DataGrids represent actual DataItems.

DataGrid dg = new DataGrid();

dg.Items.Count; //Number of Items...i.e. Rows;
dg.Items[0].Cells.Count; //Number of columns for that Items

First of all, to answer your question:

DataGrid dataGrid = new DataGrid();
int rowCount = dataGrid.BindingContext[dataGrid.DataSource].Count;

or, if you know for sure the type of the DataSource:

int rowCount = ((DataTable)this.dataGrid.DataSource).Rows.Count;
int columnCount = ((DataTable)this.dataGrid.DataSource).Columns.Count;

((DataTable)this.dataGrid.DataSource).Columns.Count;

Second of all, what I want to add is that a System.Windows.Forms.DataGrid is a display widget control, and not a container for records. There is no DataGrid.Rows.Count property or something similar for finding out the number of columns. What you have to do is to look behind the DataGrid, at the DataSource property, which in most cases is a DataTable and take what information you need from there.