C#,XML ติดปัญหาการดึงข้อมูลจากXML แอททิบิว ด้วย C#

XElement xe = XElement.Load("..\\..\\DataInfo.xml");
var tx = from t in xe.Elements("Table").Elements(tbName).Elements("Coloumn").Elements(Colname) where t.Element("Start") select t.Element("Start").Value;

<?xml version="1.0" encoding="utf-8" ?>
<Table>
  <TableName>IF_ESL_1</TableName>
    <Column>
      <ColumnName>A</ColumnName>
      <Start>11</Start>
      <Lenght>1</Lenght>
    </Column>
    <Column>
      <ColumnName>B</ColumnName>
      <Start>12</Start>
      <Lenght>2</Lenght>
    </Column>
    <Column>
      <ColumnName>C</ColumnName>
      <Start>13</Start>
      <Lenght>3</Lenght>
    </Column>
    <Column>
      <ColumnName>D</ColumnName>
      <Start>14</Start>
      <Lenght>4</Lenght>
    </Column>
    <Column>
      <ColumnName>E</ColumnName>
      <Start>15</Start>
      <Lenght>5</Lenght>
    </Column>    
</Table>