excel中列名"N.W"，读取到.net中变成"N#W"

excel中列名"N.W"，读取到.net中变成"N#W"的情况？？？

开发环境：vs.net 2008(C#)+Office2013
测试代码如下：

DataSet result = new DataSet();
//数据库连接
string fileName = @"f:\Size_Import.xlsx";
string my_StrConnection = "Provider=Microsoft.ACE.OLEDB.12.0;" + "Data Source=" + fileName + ";" + ";Extended Properties=\"Excel 12.0 Xml;HDR=YES;IMEX=1\"";
using (System.Data.OleDb.OleDbConnection my_conn = new System.Data.OleDb.OleDbConnection(my_StrConnection))
{
    my_conn.Open();
    DataTable schemaTable = my_conn.GetOleDbSchemaTable(System.Data.OleDb.OleDbSchemaGuid.Tables, null);
    string workAreaName = schemaTable.Rows[0][2].ToString().Trim();
    string my_StrSelect = "SELECT * FROM [" + workAreaName + "]";
    using (System.Data.OleDb.OleDbDataAdapter my_Adapter = new System.Data.OleDb.OleDbDataAdapter(my_StrSelect, my_conn))
    {
        //填充数据集
        my_Adapter.Fill(result, "check");
    }
}

excel中数据如下：

img

.net中读取excel数据后的结果如下：

img