以编程方式将列和行添加到WPF Datagrid

<DataGrid x:Name="dataGrid" />

// 创建一个DataTable对象，用于存储数据
DataTable dataTable = new DataTable();

// 添加列
dataTable.Columns.Add("Column1", typeof(string));
dataTable.Columns.Add("Column2", typeof(string));
dataTable.Columns.Add("Column3", typeof(string));

// 添加行
DataRow dataRow = dataTable.NewRow();
dataRow["Column1"] = "Row1, Column1";
dataRow["Column2"] = "Row1, Column2";
dataRow["Column3"] = "Row1, Column3";
dataTable.Rows.Add(dataRow);

dataRow = dataTable.NewRow();
dataRow["Column1"] = "Row2, Column1";
dataRow["Column2"] = "Row2, Column2";
dataRow["Column3"] = "Row2, Column3";
dataTable.Rows.Add(dataRow);

// 将DataTable绑定到DataGrid
dataGrid.ItemsSource = dataTable.DefaultView;