Gridview 多重表头 (二)

多重表头之排序

这是个有点忧桑的故事。。。Cynthia告诉我，研究一个问题，我们不可能有超过一天的时间。。。

结果好好几天过去鸟~~还没有完成。。。

由于不再使用Gridview自带的表头行，于是无法绑定gridview自带排序方法。只能根据点击列名做不同处理。

我的思路是酱滴，将点击的列名存在一个hiddenfield里，排序时候根据hiddenfield里存储的值作为升/降序的依据。

好丢人的说，第一次的时候存在了label里，每次回传都被label默认值覆盖，后来才发现，不是所有控件都叫Hidden field...

ASPX

 <script language="javascript" type="text/javascript">
     function test(o)
     {
         document.getElementById("Label1").innerText = o;
         document.getElementById("LinkButton1").click();
     }

 </script>
                                  ....

       <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False"  AllowSorting="true"
             onrowcreated="GridView1_RowCreated">
           <Columns>
               <asp:BoundField DataField="StoreId" HeaderText="Store Id" SortExpression="StoreId" />
               <asp:BoundField DataField="Requeseter" HeaderText="Requester" SortExpression="Requeseter" />
               <asp:BoundField DataField="EmployeeId" HeaderText="EmployeeId"  SortExpression="EmployeeId"/>
               <asp:BoundField DataField="StoreId" HeaderText="StoreId2" SortExpression="StoreId"  />
           </Columns>
     </asp:GridView>

         <asp:LinkButton ID="LinkButton1" runat="server" onclick="LinkButton1_Click"
             ClientIDMode="Static">LinkButton</asp:LinkButton>
          <asp:HiddenField ID="Label1" runat="server" Value=""/>

CS

         protected void Page_Load(object sender, EventArgs e)
         {
             if (!IsPostBack)
             {
                 List<Mix> list = new List<Mix>();
                 int i = ;
                 list.AddRange(new List<Mix> { new Mix { StoreId = , Requeseter = "A", EmployeeId = i +  }, new Mix { StoreId = , Requeseter = "A", EmployeeId = i +  }, new Mix { StoreId = , Requeseter = "A", EmployeeId = i +  }, new Mix { StoreId = , Requeseter = "B", EmployeeId = i +  } });
                 ViewState["lst"] = list;
                 GridView1.DataSource = list;
                 GridView1.DataBind();
                 ViewState["i"] = ;
             }
             this.LinkButton1.Style.Add("display", "none");
         }

         protected void GridView1_RowCreated(object sender, GridViewRowEventArgs e)
         {
             switch (e.Row.RowType)
             {
                 case DataControlRowType.Header:

                     TableCellCollection tcHeader = e.Row.Cells;
                     tcHeader.Clear();
                     //Associate
                     tcHeader.Add(new TableHeaderCell());
                     tcHeader[].BackColor = System.Drawing.Color.FromArgb(, , );
                     tcHeader[].ForeColor = System.Drawing.Color.White;
                     tcHeader[].BorderColor = System.Drawing.Color.LightGray;
                     tcHeader[].HorizontalAlign = HorizontalAlign.Center;
                     tcHeader[].Attributes.Add("rowspan", "");
                     tcHeader[].Text = "<br><a  id='Associate' href=\"#\" onclick='test(this.id)'>Associate</a>";
                     //   ClientScriptManager.RegisterForEventValidation();
                     //SecurityLevel
                     tcHeader.Add(new TableHeaderCell());
                     tcHeader[].BackColor = System.Drawing.Color.FromArgb(, , );
                     tcHeader[].ForeColor = System.Drawing.Color.White;
                     tcHeader[].BorderColor = System.Drawing.Color.LightGray;
                     tcHeader[].HorizontalAlign = HorizontalAlign.Center;
                     tcHeader[].Attributes.Add("colspan", "");
                     tcHeader[].Text = "<p>SecurityLevel</p></th></tr><tr>";

                     //2Line: Default Level
                     tcHeader.Add(new TableHeaderCell());
                     tcHeader[].BackColor = System.Drawing.Color.FromArgb(, , );
                     tcHeader[].ForeColor = System.Drawing.Color.White;
                     tcHeader[].BorderColor = System.Drawing.Color.LightGray;
                     tcHeader[].HorizontalAlign = HorizontalAlign.Center;
                     tcHeader[].Text = "<a  id='jobcodedefault' href=\"#\" onclick='test(this.id)'>Job Code Default</a>";
                     //tcHeader[2].Text = "<p>Job Code Default</p>";

                     //2Line: Current Level
                     tcHeader.Add(new TableHeaderCell());
                     tcHeader[].BackColor = System.Drawing.Color.FromArgb(, , );
                     tcHeader[].ForeColor = System.Drawing.Color.White;
                     tcHeader[].BorderColor = System.Drawing.Color.LightGray;
                     tcHeader[].HorizontalAlign = HorizontalAlign.Center;
                     //<a  id='jobcodedefault' href=\"#\" onclick='test(this.id)'>Job Code Default</a>
                     tcHeader[].Text = "<a  id='current' href=\"#\" onclick='test(this.id)'>Current</a>";

                     //tcHeader[3].Text = "<label style='width:99%; text-align:center; vertical-align:middle; color:White; font-weight:bold '>Current</label>";
                     tcHeader.Add(new TableHeaderCell());

                     //2Line: Requested Level
                     tcHeader[].BackColor = System.Drawing.Color.FromArgb(, , );
                     tcHeader[].ForeColor = System.Drawing.Color.White;
                     tcHeader[].BorderColor = System.Drawing.Color.LightGray;
                     tcHeader[].HorizontalAlign = HorizontalAlign.Center;
                     tcHeader[].Style.Add("BorderColor", "White");
                     //      tcHeader[4].Text = "<label style='width:99%; text-align:center; vertical-align:middle; color:White; font-weight:bold '>Requested</label></tr>";
                     tcHeader[].Text = "<a  id='requester' href=\"#\" onclick='test(this.id)'>Requester</a></tr>";

                     break;
             }

         }

         protected void LinkButton1_Click(object sender, EventArgs e)
         {
             List<Mix> list = new List<Mix>();
             List<Mix> listSorted = new List<Mix>();

             list = (List<Mix>)ViewState["lst"];

             switch (Label1.Value)
             {
                 case "Associate":
                     {
                         int j = (int)ViewState["i"];

                         if ((j++) %  == )
                         {
                             var historydesc = from c in list orderby c.StoreId descending select c;
                             foreach (var x in historydesc)
                             {
                                 listSorted.Add(x);
                             }
                         }
                         else
                         {
                             var historyasc = from c in list orderby c.StoreId ascending select c;
                             foreach (var x in historyasc)
                             {
                                 listSorted.Add(x);
                             }
                         }
                         ViewState["i"] = j;

                         break;
                     }
                 case "jobcodedefault":
                     {
                         int j = (int)ViewState["i"];

                         if ((j++) %  == )
                         {
                             var historydesc= from c in list orderby c.Requeseter descending select c;
                             foreach (var x in historydesc)
                             {
                                 listSorted.Add(x);
                             }
                         }
                         else
                         {
                             var historyasc = from c in list orderby c.Requeseter ascending select c;
                             foreach (var x in historyasc)
                             {
                                 listSorted.Add(x);
                             }
                         }
                         ViewState["i"] = j;

                         break;
                     }
                 case "current":
                     {
                         int j = (int)ViewState["i"];

                         if ((j++) %  == )
                         {
                             var historydesc = from c in list orderby c.EmployeeId descending select c;
                             foreach (var x in historydesc)
                             {
                                 listSorted.Add(x);
                             }
                         }
                         else
                         {
                             var historyasc = from c in list orderby c.EmployeeId ascending select c;
                             foreach (var x in historyasc)
                             {
                                 listSorted.Add(x);
                             }
                         }
                         ViewState["i"] = j;

                         break;

                     }
                 case "requester":
                     {
                         int j = (int)ViewState["i"];

                         if ((j++) %  == )
                         {
                             var historydesc = from c in list orderby c.StoreId descending select c;
                             foreach (var x in historydesc)
                             {
                                 listSorted.Add(x);
                             }
                         }
                         else
                         {
                             var historyasc = from c in list orderby c.StoreId ascending select c;
                             foreach (var x in historyasc)
                             {
                                 listSorted.Add(x);
                             }
                         }
                         ViewState["i"] = j;

                         break;

                     }
             }

             this.GridView1.DataSource = listSorted;
             this.GridView1.DataBind();
         }

就算是简单的实现了吧，直到Cynthia告诉我可以酱。

lkbAssociate.Click += new EventHandler(grdHistorySort);

以Associate列为栗子。

         //flag for asc and desc
         private bool AssociateAsc
         {
             get { return (ViewState["AssociateAsc"] == null) ? true : (bool)ViewState["AssociateAsc"]; }
             set { ViewState["AssociateAsc"] = value; }
         }

        tcHeader.Add(new TableHeaderCell());
                         tcHeader[].BackColor = System.Drawing.Color.FromArgb(, , );
                         tcHeader[].ForeColor = System.Drawing.Color.White;
                         tcHeader[].BorderColor = System.Drawing.Color.LightGray;
                         tcHeader[].HorizontalAlign = HorizontalAlign.Center;
                         tcHeader[].Attributes.Add("rowspan", "");
                         LinkButton lkbAssociate = new LinkButton();
                         lkbAssociate.Style.Add("text-align", "center");
                         lkbAssociate.Style.Add("color", "white");
                         lkbAssociate.ID = "lkbAssociate";
                         lkbAssociate.Text = "Associate (EID)";
                         lkbAssociate.Click += new EventHandler(grdHistorySort);
                         tcHeader[].Controls.Add(lkbAssociate);

         protected void grdHistorySort(object sender, EventArgs e)
         {
             List<PMSecRequestHistoryInfo> originalList = new List<PMSecRequestHistoryInfo>();
             List<PMSecRequestHistoryInfo> sortedList = new List<PMSecRequestHistoryInfo>();

             originalList = (List<PMSecRequestHistoryInfo>)ViewState["InitHistoryTabList"];
             LinkButton linkButonClicked = sender as LinkButton;

             switch (linkButonClicked.ID)
             {

                 case "lkbAssociate":
                     {
                         if (ViewState["AssociateAsc"] == null || (bool)ViewState["AssociateAsc"])
                         {
                             var sorted = from c in originalList orderby c.DisplayName ascending select c;
                             foreach (var info in sorted)
                             {
                                 sortedList.Add(info);
                             }

                             ViewState["AssociateAsc"] = false;
                         }
                         else
                         {
                             var sorted = from c in originalList orderby c.DisplayName descending select c;
                             foreach (var info in sorted)
                             {
                                 sortedList.Add(info);
                             }

                             ViewState["AssociateAsc"] = true;
                         }

                     }
                     break;
                    ...

酱婶儿的，会不会简明扼要的多。。。Cynthiao(≧v≦)o~~好棒

唯一遗憾的是我不晓得如何为分隔的列添加控件同时添加格式。

这样两列，不能如法炮制。

第一次时候用了上次的写法，写了一个<a onclik></a>,发现页面要刷瞎我的双眼。。。

不闪的，才是健康的~

于是，拽了一个LinkButton,点了事件里的onclick想看看是个什么样子。ViewSource 发现是辣样一个东西，于是模仿了一个。

                         tcHeader[].Text = "<a id='LinkButton1' href='javascript:__doPostBack('LinkButton1','')' style='text-align:center;color:white' >Request</a></th></tr><tr>";

排序类似

         protected void LinkButton1_Click(object sender, EventArgs e)
         {
             List<PMSecRequestHistoryInfo> originalList = new List<PMSecRequestHistoryInfo>();
             List<PMSecRequestHistoryInfo> sortedList = new List<PMSecRequestHistoryInfo>();

             originalList = (List<PMSecRequestHistoryInfo>)ViewState["InitHistoryTabList"];

                 if (ViewState["RequestedLevelAsc"] == null || (bool)ViewState["RequestedLevelAsc"] == true)
                 {
                     var sorted = from c in originalList orderby c.RequestedSecurityLevel ascending select c;
                     foreach (var info in sorted)
                     {
                         sortedList.Add(info);
                     }
                     ViewState["RequestedLevelAsc"] = false;

                 }
                 else
                 {
                     var sorted = from c in originalList orderby c.RequestedSecurityLevel descending select c;
                     foreach (var info in sorted)
                     {
                         sortedList.Add(info);
                     }

                     ViewState["RequestedLevelAsc"] = true;
                 }

             grdHistoryRequest.DataSource = sortedList;
             grdHistoryRequest.DataBind();
             ViewState["InitHistoryTabList"] = sortedList;

         }

真正困惑我的是，如果我把页面上的LinkButton删掉，排序会 米！有！效！

百思不得姐，姐百思不得。。。。