方法一：

DataTable dt = dataSet.Tables[];

for(int i =  ; i < dt.Rows.Count ; i++)

{

   string strName = dt.Rows[i]["字段名"].ToString();

}     

方法二：

foreach(DataRow myRow in myDataSet.Tables["temp"].Rows)

{

      var str = myRow[].ToString();

}     

方法三：

foeach(DataRow dr in dt.Rows)

{

     object value = dr["ColumnsName"];

}     

方法四：

DataTable dt=new DataTable();

foreach(DataRow dr in dt.Rows)

{

   for(int i=;i<dt.Columns.Count;i++)

   {

dr[i];

   }

}     

绑定DataTable到Reapter。

if (dtb_xx.Rows.Count > )

        {

            rp_xx.DataSource = dtb_xx;

            rp_xx.DataBind();

        }

<asp:Repeater ID="rp_xx" runat="server">

       <ItemTemplate>

            <tr>

                  <td>

                      <div>

                            <ul class="ListHorizontally">

                                 <li>

                                      <div class="TCell1">

                                            <%#Eval("ID")%>

                                       </div>

                                  </li>

                                  <li>

                                       <div class="TCell2">

                                             <%#Eval("Name")%>

                                        </div>

                                  </li>

                            </ul>

                       </div>

                    </td>

                </tr>

            </ItemTemplate>

         </asp:Repeater>

方法五

DataRow[] dataRows = null;

dataRows = dataTable.Select(fieldParentID + "='" + treeNode.Tag.ToString() + "'", dataTable.DefaultView.Sort);

foreach (DataRow dataRow in dataRows)

{   

     DataRow dataRow = dataTable.Rows[i];   

     ?? = dataRow[fieldParentID].ToString();