/// <summary>
/// 添加新字段
/// </summary>
/// <param name="layer">图层</param>
/// <param name="fieldName">字段名称</param>
/// <param name="fieldType">字段类型</param>
/// <param name="isNullable"></param>
/// <param name="isRequired"></param>
/// <param name="isEditable"></param>
/// <returns></returns>
public bool AddNewField(ILayer layer, string fieldName, esriFieldType fieldType, bool isNullable = true,
bool isRequired = false, bool isEditable = true)
{
ITable iTable = AttributeTableClass.GetITableByLayer(layer);
return(AddNewField(iTable, fieldName, fieldType, isNullable, isRequired, isEditable));
}
/// <summary>
/// 添加表格的多列数据到图层
/// </summary>
/// <param name="fieldNames"></param>
private void AddTableColumns(List <string> fieldNames)
{
ITable pTable = AttributeTableClass.GetITableByLayer(newFieldLayer);
if (pTable == null)
{
return;
}
Dictionary <int, string> indexAndNames = GetFieldIndexAndName(pTable, fieldNames);
if (indexAndNames.Count == 0)
{
return;
}
IQueryFilter pFilter = GetQueryFilter(indexAndNames.Values.ToList());
ICursor pCursor = pTable.Update(pFilter, false);
IRow pRow = pCursor.NextRow();
int rowCount = pTable.RowCount(null);
for (int i = 0; i < rowCount; i++)
{
foreach (var indexAndName in indexAndNames)
{
object rowValue = newFieldTable.Rows[i][indexAndName.Value];
//非空
if (rowValue == DBNull.Value)
{
continue;
}
pRow.set_Value(indexAndName.Key, rowValue);
pCursor.UpdateRow(pRow);
}
pRow = pCursor.NextRow();
}
}
/// <summary>
/// 添加表格的数据到图层
/// </summary>
/// <param name="fieldName">字段名称</param>
/// <param name="columnName">列名称</param>
private void AddTableColumnByDictionary(string fieldName, string columnName)
{
if (!newFieldTable.Columns.Contains(columnName))
{
MessageBox.Show(@"The column is not in the table！");
return;
}
ITable pTable = AttributeTableClass.GetITableByLayer(newFieldLayer);
if (pTable == null)
{
return;
}
int addFieldIndex = pTable.Fields.FindField(fieldName);
if (addFieldIndex == -1)
{
return;
}
IQueryFilter pFilter = new QueryFilterClass();
pFilter.SubFields = fieldName; //设置过滤字段，提高效率
ICursor pCursor = pTable.Update(pFilter, false);
UpdateRow(pCursor, addFieldIndex, columnName);
}
/// <summary>
/// 获取栅格图层的属性表
/// </summary>
/// <param name="layer">栅格图层</param>
/// <param name="queryFilter2">过滤条件</param>
/// <returns></returns>
public static DataTable GetRasterTableByLayer(ILayer layer, IQueryFilter2 queryFilter2 = null)
{
ITable iTable = BuildRasterAttributeTable(layer);
//ITable iTable = (ITable)layer; //若已存在属性表，直接用该行代码
return(AttributeTableClass.GetAttributeTableByITable(iTable));
}
/// <summary>
/// 获取栅格数据集的属性表
/// </summary>
/// <param name="geoDataset">输入几何数据集</param>
/// <returns></returns>
public static DataTable GetRasterTableByGeoDataset(IGeoDataset geoDataset)
{
IRaster raster = (IRaster)geoDataset;
ITable iTable = GetTableByRaster(raster);
return(AttributeTableClass.GetAttributeTableByITable(iTable));
}
/// <summary>
/// 添加新字段
/// </summary>
/// <param name="fieldName">字段名称</param>
/// <param name="fieldType">字段类型</param>
public void AddNewFiled(string fieldName, esriFieldType fieldType)
{
ITable iTable = AttributeTableClass.GetITableByLayer(newFieldLayer);
//先删除
DeleteFieldClass.DeleteField(iTable, fieldName);
//再添加
iTable.AddField(NewFieldClass.GetNewFieldEdit(fieldName, fieldType));
AddTableColumn(fieldName, fieldName);
}
/// <summary>
/// 获取字段索引
/// </summary>
/// <param name="layer"></param>
/// <param name="fieldName"></param>
/// <returns></returns>
public static int GetFieldIndex(ILayer layer, string fieldName)
{
ITable iTable = AttributeTableClass.GetITableByLayer(layer);
if (iTable == null)
{
return(-1);
}
return(iTable.Fields.FindField(fieldName));
}
/// <summary>
/// 获取不在指定类型中的字段
/// </summary>
/// <param name="layer">图层</param>
/// <param name="fieldTypes">指定类型的字段</param>
/// <returns></returns>
private static List <string> GetFieldNameNotInFieldTypes(ILayer layer,
Dictionary <esriFieldType, int> fieldTypes)
{
ITable iTable = AttributeTableClass.GetITableByLayer(layer);
if (iTable == null)
{
return(null);
}
return(GetFieldNameNotInFieldTypes(iTable.Fields, fieldTypes));
}
/// <summary>
/// 添加多个新字段
/// </summary>
/// <param name="fieldNames"></param>
/// <param name="fieldType">字段类型</param>
public void AddNewFields(List <string> fieldNames, esriFieldType fieldType)
{
ITable iTable = AttributeTableClass.GetITableByLayer(newFieldLayer);
foreach (string fieldName in fieldNames)
{
//先删除
DeleteFieldClass.DeleteField(iTable, fieldName);
//再添加
iTable.AddField(NewFieldClass.GetNewFieldEdit(fieldName, fieldType));
}
AddTableColumns(fieldNames);
}
/// <summary>
/// 获取图层表格数据统计对象
/// </summary>
/// <param name="layer"></param>
/// <param name="fieldName"></param>
/// <returns></returns>
public static IDataStatistics GetDataStatistics(ILayer layer, string fieldName)
{
ITable iTable = AttributeTableClass.GetITableByLayer(layer);
if (iTable == null || iTable.FindField(fieldName) == -1)
{
return(null);
}
IQueryFilter2 queryFilter = new QueryFilterClass();
queryFilter.SubFields = fieldName;
//获得游标
ICursor pCursor = iTable.Search(queryFilter, false);
IDataStatistics dataStatistics = new DataStatisticsClass();
dataStatistics.Field = fieldName; //字段
dataStatistics.Cursor = pCursor;
return(dataStatistics);
}
/// <summary>
/// 添加表格的单列数据到图层
/// </summary>
/// <param name="fieldName">字段名称</param>
/// <param name="columnName">列名称</param>
private void AddTableColumn(string fieldName, string columnName)
{
if (!newFieldTable.Columns.Contains(columnName))
{
MessageBox.Show(@"The column is not in the table！");
return;
}
ITable pTable = AttributeTableClass.GetITableByLayer(newFieldLayer);
if (pTable == null)
{
return;
}
int addFieldIndex = pTable.Fields.FindField(fieldName);
if (addFieldIndex == -1)
{
return;
}
IQueryFilter pFilter = new QueryFilterClass();
pFilter.SubFields = fieldName; //设置过滤字段，提高效率
ICursor pCursor = pTable.Update(pFilter, false);
IRow pRow = pCursor.NextRow();
int rowCount = pTable.RowCount(null);
for (int i = 0; i < rowCount; i++)
{
object rowValue = newFieldTable.Rows[i][columnName];
//非空
if (rowValue != DBNull.Value)
{
pRow.set_Value(addFieldIndex, rowValue);
pCursor.UpdateRow(pRow);
}
pRow = pCursor.NextRow();
}
}
/// <summary>
/// 获取不可编辑字段
/// </summary>
/// <param name="layer">图层</param>
/// <returns></returns>
public static List <string> GetReadonlyFieldNames(ILayer layer)
{
ITable iTable = AttributeTableClass.GetITableByLayer(layer);
if (iTable == null)
{
return(null);
}
IFields fields = iTable.Fields;
List <string> outField = new List <string>();
for (int i = 0; i < fields.FieldCount; i++)
{
IField curField = fields.Field[i];
//字段可编辑，则跳过
if (IsFieldEditable(curField))
{
continue;
}
outField.Add(curField.Name);
}
return(outField);
}
/// <summary>
/// 修改字段
/// </summary>
/// <param name="layer"></param>
public ChangeFieldClass(ILayer layer)
{
fieldTable = AttributeTableClass.GetITableByLayer(layer);
}
/// <summary>
/// 获取栅格的属性表
/// </summary>
/// <param name="raster">栅格</param>
/// <returns></returns>
public static DataTable GetRasterTableByIRaster(IRaster raster)
{
ITable iTable = GetTableByRaster(raster);
return(AttributeTableClass.GetAttributeTableByITable(iTable));
}
/// <summary>
/// 根据名称获取字段
/// </summary>
/// <param name="layer">图层</param>
/// <param name="fieldName">字段名称</param>
/// <returns></returns>
public static IField GetFieldByName(ILayer layer, string fieldName)
{
return(GetFieldByName(AttributeTableClass.GetITableByLayer(layer), fieldName));
}