arcengine 删除属性表字段

/// <summary>
/// 删除属性表字段
/// </summary>
/// <param name="layer">需要添加字段的IFeatureLayer</param>
/// <param name="fieldName">添加的字段的名称</param>
/// <returns></returns>
static public bool DeleteField(IFeatureLayer 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;
}
}