ArcEngine对属性表的操作

1. 删除字段

/// <summary>
        /// 删除字段
        /// </summary>
        /// <param name="layer">目标要素类</param>
        /// <param name="fieldName">需要删除的字段</param>
        /// <returns></returns>
        static public bool DeleteField(IFeatureClass layer, string fieldName)
        {
            try
            {
                ITable pTable = (ITable)layer;
                IFields pfields;
                IField pfield;
                pfields = pTable.Fields;
                int fieldIndex = pfields.FindField(fieldName);
                pfield = pfields.get_Field(fieldIndex);
                pTable.DeleteField(pfield);
                return true;
            }
            catch (Exception ex)
            {
                return false;
            }
        }

　　2.添加字段

  /// <summary>
        /// 添加字段
        /// </summary>
        /// <param name="layer">目标要素类</param>
        /// <param name="fieldName">需要添加的字段</param>
        /// <param name="AliasName">需要添加的字段的别名</param>
        /// <param name="length">字段的长度</param>
        /// <returns></returns>
        static public bool AddField(IFeatureClass layer, string fieldName, string AliasName, int length)
        {
            try
            {
                ITable pTable = (ITable)layer;

                IFieldEdit pFieldEdit = new FieldClass()
                {
                    IFieldEdit_Type_2 = esriFieldType.esriFieldTypeString,
                    IFieldEdit_AliasName_2 = AliasName,
                    IFieldEdit2_Name_2 = fieldName,
                    IFieldEdit_Length_2 = 50,
                    IFieldEdit_DefaultValue_2 = "-",
                    IFieldEdit_IsNullable_2 = true
                };
                pTable.AddField(pFieldEdit);
                return true;

            }
            catch (Exception ex)
            {
                return false;
            }
        }

　　3.编辑属性，像属性表中的行写入属性

   static public void UpadateTable(IFeatureClass pFeatClass, List<FeatureCate> group1)
        {
            ITable pTable = pFeatClass as ITable;

            ICursor pCursor = pTable.Update(null, false);
            IRow pRow = pCursor.NextRow();
            int indexOfBSM = pFeatClass.FindField("BSM");
            int indexOfLZ_1 = pFeatClass.FindField("LZ");
            int indexOfZYSZ_1 = pFeatClass.FindField("ZYSZ");
            int indexOfZDGN_1 = pFeatClass.FindField("ZDGN");
            if (indexOfBSM == -1 || indexOfLZ_1 == -1 || indexOfZYSZ_1 == -1)
            {
                MessageBox.Show("未找到字段");
            }
            while (pRow != null)
            {
                string TableBSM = pRow.get_Value(indexOfBSM).ToString();
                for (int i = 0; i < group1.Count; i++)
                {
                    if (TableBSM == group1[i].BSM)
                    {
                        pRow.set_Value(indexOfLZ_1, group1[i].LZ_1);
                        pRow.set_Value(indexOfZYSZ_1, group1[i].ZYSZ_1);
                        pRow.set_Value(indexOfZDGN_1, group1[i].ZDGN_1);
                        pCursor.UpdateRow(pRow);
                    }

                }
                pRow = pCursor.NextRow();
            }

        }