.net c#从GridView的数据生成DataTable

直接上方法:

/// <summary>
        /// 从GridView的数据生成DataTable
        /// </summary>
        /// <param name="gv">GridView对象</param>
        public static DataTable GridView2DataTable(GridView gv)
        {
            DataTable table = new DataTable();
            int rowIndex = 0;
            List<string> cols = new List<string>();
            if (!gv.ShowHeader && gv.Columns.Count == 0)
            {
                return table;
            }
            GridViewRow headerRow = gv.HeaderRow;
            int columnCount = headerRow.Cells.Count;
            for (int i = 0; i < columnCount; i++)
            {
                string text = GetCellText(headerRow.Cells[i]);
                cols.Add(text);
            }
            foreach (GridViewRow r in gv.Rows)
            {
                if (r.RowType == DataControlRowType.DataRow)
                {
                    DataRow row = table.NewRow();
                    int j = 0;
                    for (int i = 0; i < columnCount; i++)
                    {
                        string text = GetCellText(r.Cells[i]);
                        if (!String.IsNullOrEmpty(text))
                        {
                            if (rowIndex == 0)
                            {
                                string columnName = cols[i];
                                if (String.IsNullOrEmpty(columnName))
                                {
                                    continue;
                                }
                                if (table.Columns.Contains(columnName))
                                {
                                    continue;
                                }
                                DataColumn dc = table.Columns.Add();
                                dc.ColumnName = columnName;
                                dc.DataType = typeof(string);
                            }
                            row[j] = text;
                            j++;
                        }
                    }
                    rowIndex++;
                    table.Rows.Add(row);
                }
            }
            return table;
        }