DataTable

//遍历datatable的方法2009-09-08 10:02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();
}   

DataTable创建

 DataTable dt = new DataTable("dtFax");
 dt.Columns.Add("check", System.Type.GetType("System.Boolean"));
 dt.Columns.Add("Id", System.Type.GetType("System.String"));
 dt.Columns.Add("TargetName", System.Type.GetType("System.String"));
 dt.Columns.Add("TypeName", System.Type.GetType("System.String"));
 dt.Columns.Add("TargetType", System.Type.GetType("System.String"));
 dt.Columns.Add("RealTimeStateAlise", System.Type.GetType("System.String"));
 dt.Columns.Add("CreateTime", System.Type.GetType("System.DateTime"));
 dt.Columns.Add("ModifyTime", System.Type.GetType("System.DateTime"));
 dt.Columns.Add("Remark", System.Type.GetType("System.String"));

   　　　　　　　　//填充到DataTable中
                foreach (var c in collection)
                {
                    DataRow dr = dt.NewRow();
                    if (SelectedKeyWords.Keys.Contains(c.Id))
                        dr["check"] = true;
                    else
                        dr["check"] = false;

                    dr["Id"] = c.Id;
                    dr["TargetName"] = c.TargetName;
                    dr["TypeName"] = c.TypeName;
                    dr["TargetType"] = c.TargetName;
                    dr["RealTimeStateAlise"] = c.RealTimeStateAlise;

                    if (c.CreateTime == null)
                        dr["CreateTime"] = DBNull.Value;
                    else
                        dr["CreateTime"] = c.CreateTime;

                    if (c.ModifyTime == null)
                        dr["ModifyTime"] = DBNull.Value;
                    else
                        dr["ModifyTime"] = c.ModifyTime;

                    dr["Remark"] = c.Remark;
                    dt.Rows.Add(dr);
                }