尋呼無法正常工作

Question

我已經打開了我的gridview上的分頁，但是當我嘗試更改頁面時，回發數據回來爲空。

第一次加載頁面時，數據就在那裏。

這是我第一次做這個，所以我可能做錯了什麼。

該數據源是一個membershipusercollection列表。

這裏是我的代碼...

protected void Page_Load(object sender, EventArgs e) 
{ 
    count = 0;    

    switch (Request.QueryString["status"]) 
    { 
     case "active": 
      lblUserListTitle.Text = "Activated user accounts"; 
      break; 
     case "inactive": 
      lblUserListTitle.Text = "Inactive user accounts"; 
      break; 
     case "locked": 
      lblUserListTitle.Text = "Locked user accounts"; 
      break; 
     case "online": 
      lblUserListTitle.Text = "Users online"; 
      break; 
     case "notverified": 
      lblUserListTitle.Text = "Users accounts not yet verified"; 
      break; 
     default: 
      lblUserListTitle.Text = "All user accounts"; 
      break; 
    } 
    if (!IsPostBack) 
     BindGrid();  

    lblSearchResult.Text = "There are " + count.ToString() + " registered users found."; 
} 
protected void BindGrid() 
{ 
    MembershipUserCollection usersList = Membership.GetAllUsers(); 
    MembershipUserCollection filteredUsers = new MembershipUserCollection(); 

    foreach (MembershipUser user in usersList) 
    { 
     if (!Roles.IsUserInRole(user.UserName, "Admin") && !Roles.IsUserInRole(user.UserName, "Engineering")) 
     { 
      userProfile = Profile.GetProfile(user.UserName); 

      if (txtFilterCustomerNo.Text.Length > 0) 
      { 
       ProfileCommon PC = Profile.GetProfile(user.UserName); 
       if (PC.RaymarineAccountNo == txtFilterCustomerNo.Text.ToUpper()) 
       { 
        filteredUsers.Add(user); 
        count++; 
       } 
      } 
      else 
      { 
       //filter on querystring 
       if (Request.QueryString["status"] == "active") 
       { 
        if (user.IsApproved && !user.IsLockedOut) 
        { 
         filteredUsers.Add(user); 
         count++; 
        } 
       } 
       else if (Request.QueryString["status"] == "inactive") 
       { 
        if (!user.IsApproved && !user.IsLockedOut) 
        { 
         filteredUsers.Add(user); 
         count++; 
        } 
       } 
       else if (Request.QueryString["status"] == "locked") 
       { 
        if (user.IsLockedOut) 
        { 
         filteredUsers.Add(user); 
         count++; 
        } 
       } 
       else if (Request.QueryString["status"] == "online") 
       { 
        if (user.IsOnline) 
        { 
         filteredUsers.Add(user); 
         count++; 
        } 
       } 
       else if (Request.QueryString["status"] == "notverified") 
       { 
        if (user.IsApproved && !userProfile.IsVerified) 
        { 
         filteredUsers.Add(user); 
         count++; 
        } 
       } 
       else 
       { 
        filteredUsers.Add(user); 
        count++; 
       } 
      } 
     } 
    } 

    GridView1.DataSource = filteredUsers; 
    GridView1.DataBind(); 
} 
protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e) 
{ 
    GridView1.PageIndex = e.NewPageIndex; 
    BindGrid(); 
} 

，並在.aspx頁面...

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" Width="1000px" onrowdatabound="GridView1_RowDataBound" ViewStateMode="Enabled" AllowPaging="True" onpageindexchanging="GridView1_PageIndexChanging" PageSize="25"> 
       <Columns> 
        <asp:TemplateField ItemStyle-Width="70px"> 
         <ItemTemplate> 
          <asp:HyperLink ID="lnkProfile" runat="server"><asp:Image ID="Image3" runat="server" ImageUrl="~/Content/admin_miniProfile.png" AlternateText="User Profile" /></asp:HyperLink> 
          &nbsp;<asp:HyperLink ID="lnkPermissions" runat="server"><asp:Image ID="Image2" runat="server" ImageUrl="~/Content/admin_miniPermissions.png" AlternateText="Permissions" /></asp:HyperLink> 
          &nbsp;<asp:HyperLink ID="lnkPassword" runat="server"><asp:Image ID="Image1" runat="server" ImageUrl="~/Content/admin_miniResetPassword.png" AlternateText="Reset Password" /></asp:HyperLink> 
         </ItemTemplate> 
        </asp:TemplateField>       
        <asp:BoundField DataField="UserName" HeaderText="User Name" /> 
        <asp:TemplateField ItemStyle-Width="100px" HeaderText="Account No"> 
         <ItemTemplate>         
          <asp:Label ID="lblAccountNo" runat="server" Text=""></asp:Label> 
         </ItemTemplate> 
        </asp:TemplateField>       
        <asp:BoundField DataField="CreationDate" HeaderText="Created" ItemStyle-Width="160px" /> 
        <asp:TemplateField ItemStyle-Width="20px"> 
         <ItemTemplate> 
          <asp:HyperLink ID="lnkSalesman" runat="server"><asp:Image ID="imgFilter" runat="server" ImageUrl="~/Content/admin_miniFilter.png" /></asp:HyperLink> 
         </ItemTemplate> 
        </asp:TemplateField> 
        <asp:TemplateField ItemStyle-Width="200px" HeaderText="Salesman"> 
         <ItemTemplate>         
          <asp:Label ID="lblSalesman" runat="server" Text=""></asp:Label> 
         </ItemTemplate> 
        </asp:TemplateField> 
        <asp:TemplateField ItemStyle-Width="20px"> 
         <ItemTemplate> 
          <asp:HyperLink ID="lnkDelete" runat="server"><asp:Image ID="Image4" runat="server" ImageUrl="~/Content/admin_miniDeleteUser.png" AlternateText="Delete User" /></asp:HyperLink> 
         </ItemTemplate> 
        </asp:TemplateField> 
       </Columns>  
       <PagerSettings Position="TopAndBottom" /> 
       <RowStyle Height="20px" VerticalAlign="Middle" />   
       <AlternatingRowStyle BackColor="#EEEEEE" />   
      </asp:GridView> 

一切工作除了分頁罰款。

任何人都可以幫助我嗎？請讓我知道，如果我錯過了任何重要的信息，我會更新！

Answer 1

我已經整理過！

我已經將集合放入頁面加載的會話中，並將gridview數據源綁定到會話對象。只有在不回發時創建會話對象。

更新的代碼工作...

protected void Page_Load(object sender, EventArgs e) 
{ 
    count = 0;    

    switch (Request.QueryString["status"]) 
    { 
     case "active": 
      lblUserListTitle.Text = "Activated user accounts"; 
      break; 
     case "inactive": 
      lblUserListTitle.Text = "Inactive user accounts"; 
      break; 
     case "locked": 
      lblUserListTitle.Text = "Locked user accounts"; 
      break; 
     case "online": 
      lblUserListTitle.Text = "Users online"; 
      break; 
     case "notverified": 
      lblUserListTitle.Text = "Users accounts not yet verified"; 
      break; 
     default: 
      lblUserListTitle.Text = "All user accounts"; 
      break; 
    } 

    if (!IsPostBack) 
    { 
     MembershipUserCollection usersList = Membership.GetAllUsers(); 
     MembershipUserCollection filteredUsers = new MembershipUserCollection(); 

     foreach (MembershipUser user in usersList) 
     { 
      if (!Roles.IsUserInRole(user.UserName, "Admin") && !Roles.IsUserInRole(user.UserName, "Engineering")) 
      { 
       userProfile = Profile.GetProfile(user.UserName); 

       if (txtFilterCustomerNo.Text.Length > 0) 
       { 
        ProfileCommon PC = Profile.GetProfile(user.UserName); 
        if (PC.RaymarineAccountNo == txtFilterCustomerNo.Text.ToUpper()) 
        { 
         filteredUsers.Add(user); 
         count++; 
        } 
       } 
       else 
       { 
        //filter on querystring 
        if (Request.QueryString["status"] == "active") 
        { 
         if (user.IsApproved && !user.IsLockedOut) 
         { 
          filteredUsers.Add(user); 
          count++; 
         } 
        } 
        else if (Request.QueryString["status"] == "inactive") 
        { 
         if (!user.IsApproved && !user.IsLockedOut) 
         { 
          filteredUsers.Add(user); 
          count++; 
         } 
        } 
        else if (Request.QueryString["status"] == "locked") 
        { 
         if (user.IsLockedOut) 
         { 
          filteredUsers.Add(user); 
          count++; 
         } 
        } 
        else if (Request.QueryString["status"] == "online") 
        { 
         if (user.IsOnline) 
         { 
          filteredUsers.Add(user); 
          count++; 
         } 
        } 
        else if (Request.QueryString["status"] == "notverified") 
        { 
         if (user.IsApproved && !userProfile.IsVerified) 
         { 
          filteredUsers.Add(user); 
          count++; 
         } 
        } 
        else 
        { 
         filteredUsers.Add(user); 
         count++; 
        } 
       } 
      } 
     } 

     if (Session["FilteredUsers"] == null) 
      Session.Add("FilteredUsers", new MembershipUserCollection()); 
     Session["FilteredUsers"] = filteredUsers; 
    } 

    BindGrid();  

    lblSearchResult.Text = "There are " + count.ToString() + " registered users found."; 
} 
protected void BindGrid() 
{  

    GridView1.DataSource = (MembershipUserCollection)Session["FilteredUsers"]; 
    GridView1.DataBind(); 
} 
protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e) 
{ 
    GridView1.PageIndex = e.NewPageIndex; 
    BindGrid(); 
} 

如果有比這更好的辦法，請不要說了，我還在學習asp.net/c#！

謝謝