使用GUID作为标识符创建ac#datatable对象？

Question

这是可能的而不是递增的ID号,我在代码中有GUID吗？

Answer 1

当然,请点击这里:

http://msdn.microsoft.com/en-us/library/system.data.datatable.primarykey(VS.71).aspx

   // Create a new DataTable and set two DataColumn objects as primary keys.
   DataTable myTable = new DataTable();
   DataColumn[] keys = new DataColumn[1];
   DataColumn myColumn = new DataColumn();
   myColumn.DataType = System.Type.GetType("System.Guid");
   myColumn.ColumnName= "ID";
   // Add the column to the DataTable.Columns collection.
   myTable.Columns.Add(myColumn);
   keys[0] = myColumn;
   // Set the PrimaryKeys property to the array.
   myTable.PrimaryKey = keys;