基线 SVN r240

SVN-Revision: r240
2025-02-06 06:46:06 +00:00
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+/******************************
+* 说明：DataTable相关扩展方法
+* 创建人：龚宇超
+* 创建日期：2017-11-15
+* 修改人：
+* 修改日期：
+* 修改备注：
+* 版本：1.0.0.0
+******************************/
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Data;
+
+namespace Lskj.Util
+{
+    /// <summary>
+    /// DataTable相关扩展方法
+    /// </summary>
+    public static class DataTableExtend
+    {
+        /// <summary>
+        /// <para>说明：移除DataTable中DataRow空白行</para>
+        /// <para>创建人：龚宇超</para>
+        /// <para>创建日期：2017-11-15 </para>
+        /// <para>修改人：</para>
+        /// <para>修改日期：</para>
+        /// <para>修改备注：</para>
+        /// <para>版本：1.0</para>
+        /// </summary>
+        /// <param name="rows">The rows.</param>
+        public static DataTable TrimEmptyRows(this DataTable table)
+        {
+            //GridView.DeleteSelectedRows()只是改变了数据状态为delete,数据依然存在于table中需要更新
+            table.AcceptChanges();
+            if (table == null) return table;
+
+            int rowCount = table.Rows.Count;
+            for (int i = rowCount - 1; i > 0; i--)
+            {
+                bool isNull = true;
+                DataRow item = table.Rows[i];
+                for (int j = 0; j < table.Columns.Count; j++)
+                {
+                    DataColumn col = table.Columns[j];
+                    if (!string.IsNullOrWhiteSpace(item[col.ColumnName] + ""))
+                    {
+                        isNull = false;
+                        break;
+                    }
+                }
+                if (isNull)
+                {
+                    table.Rows.Remove(item);
+                }
+            }
+            return table;
+        }
+        /// <summary>
+        /// <para>说明：移除DataTable中已删除的行</para>
+        /// <para>创建人：龚宇超</para>
+        /// <para>创建日期：2017-11-30 </para>
+        /// <para>修改人：</para>
+        /// <para>修改日期：</para>
+        /// <para>修改备注：</para>
+        /// <para>版本：1.0</para>
+        /// </summary>
+        /// <param name="table">The table.</param>
+        /// <returns>DataTable.</returns>
+        public static DataTable TrimDeleteRows(this DataTable table)
+        {
+            if (table == null || table.Rows.Count == 0) return table;
+
+            DataRow[] deleteRows = table.Rows.Cast<DataRow>().Where(x => x.RowState == DataRowState.Deleted).ToArray();
+
+            for (int i = 0; i < deleteRows.Length; i++)
+            {
+                table.Rows.Remove(deleteRows[i]);
+            }
+            return table;
+        }
+        /// <summary>
+        /// <para>说明：按field排序DataTable</para>
+        /// <para>创建人：龚宇超</para>
+        /// <para>创建日期：2017-11-30 </para>
+        /// <para>修改人：</para>
+        /// <para>修改日期：</para>
+        /// <para>修改备注：</para>
+        /// <para>版本：1.0</para>
+        /// </summary>
+        /// <param name="table">The table.</param>
+        /// <param name="field">The field.</param>
+        /// <returns>DataTable.</returns>
+        public static DataTable OrderBy(this DataTable table, string field)
+        {
+            if (table == null || table.Rows.Count == 0 || string.IsNullOrEmpty(field) || !table.Columns.Contains(field)) return table;
+
+            table.AcceptChanges();
+            table = table.TrimDeleteRows();
+
+            for (int i = 0; i < table.Rows.Count; i++)
+            {
+                table.Rows[i][field] = (i + 1);
+            }
+
+            return table;
+        }
+        /// <summary>
+        /// <para>说明：按配置条件排序DataTable</para>
+        /// <para>创建人：王一帆</para>
+        /// <para>创建日期：2020-07-03 </para>
+        /// <para>修改人：</para>
+        /// <para>修改日期：</para>
+        /// <para>修改备注：</para>
+        /// <para>版本：1.0</para>
+        /// </summary>
+        /// <param name="table">The table.</param>
+        /// <param name="field">The field.</param>
+        /// <returns>DataTable.</returns>
+        public static DataTable OrderBy(this DataTable table, string field, string UpperFieldName, int RowHandle)
+        {
+            if (table == null || table.Rows.Count == 0 || string.IsNullOrEmpty(field) || !table.Columns.Contains(field)) return table;
+
+            table.AcceptChanges();
+            table = table.TrimDeleteRows();
+            if (RowHandle == 0)
+            {
+                for (int i = RowHandle; i < table.Rows.Count; i++)
+                {
+                    if (string.IsNullOrEmpty(table.Rows[i][UpperFieldName] + "")) continue;
+                    table.Rows[i+1][field] = table.Rows[i][UpperFieldName];
+                }
+            }
+            else
+            {
+                for (int i = RowHandle; i < table.Rows.Count; i++)
+                {
+                    if (string.IsNullOrEmpty(table.Rows[i - 1][UpperFieldName] + "")) continue;
+                    table.Rows[i][field] = table.Rows[i - 1][UpperFieldName];
+                }
+            }
+            return table;
+        }
+    }
+}