用户控件抛出一个事件

//网格新增数据列事件 public delegate void DataGridNewColumnEventHandler(object sender, DataGridNewColumnEventArgs e); ================================== //网格新增数据列事件参数 public class DataGridNewColumnEventArgs : EventArgs { private GridControl fGridControl; private GridView fGridView; public DataGridNewColumnEventArgs(GridControl aGridControl, GridView aGridView) : base() { this.fGridControl = aGridControl; this.fGridView = aGridView; } public GridControl GridControl { get { return fGridControl; } } public GridView GridView { get { return fGridView; } } } ==================================================  [Category("数据"), Description("网格新增数据列的事件")] public event DataGridNewColumnEventHandler DataGridNewColumn; ==================================================== //添加新列 DataTableNewColumn();  =============================================== private void DataTableNewColumn() { DataGridNewColumnEventArgs vEventArgs; if (DataGridNewColumn != null) { vEventArgs = new DataGridNewColumnEventArgs(this.gridControl1, this.gridView1); DataGridNewColumn(this, vEventArgs); } }