c#获取access字段的说明描述

/// <summary>
/// 获取指定表名的列名与描述注释
/// </summary>
/// <param name="mdbFilePath"></param>
/// <param name="tableName"></param>
/// <returns></returns>
public static Hashtable GetTableFieldsDisFromMdb(string mdbFilePath, string tableName)
{
Hashtable tableFields = new Hashtable();
try
{
ADOX.CatalogClass cat = new ADOX.CatalogClass();
string sAccessConnection = strConnRoot + mdbFilePath;
ADODB.Connection cn = new ADODB.Connection();
cn.Open(sAccessConnection, null, null, -1);
cat.ActiveConnection = cn;
ADOX.Table tb = cat.Tables[tableName];
if (tb!=null)
{
foreach (ADOX.Column col in tb.Columns)
{
string colName = col.Name.ToString();
string colDis = "";
foreach (ADOX.Property pro in col.Properties)
{
if (pro.Name == "Description")
{
if (pro.Value != null) colDis = pro.Value.ToString();
break;
}
}
tableFields.Add(colName, colDis);
}
}
cat = null;
cn.Close();
}
catch (System.Exception ex)
{
return tableFields;
}
return tableFields;
}