我是一个模态表单，我在这里展示文章。
在我的手柄中，我有一个标签，对于标签的每一行，我有8个网页控件（5个ImageButton，1个LinkButton，1个TextBox，1个DropDownList）和一个事件处理程序。
例如，如果我的文件中有98篇文章，我将有98行和784（98 * 8）个网页控件。加载花了太多时间。
我怎样才能改善装载效果？
以下是构建标签的代码：
foreach (LignePanier lp in liste)
{
TableRow tr = new TableRow();
tr.CssClass = "lignePanier";
tr.Width = Unit.Percentage(100);
tr.Attributes["style"] = "background-color:" + couleur;
TableCell celluleLogo = new TableCell();
celluleLogo.CssClass = "celluleTabArticle";
celluleLogo.Width = Unit.Percentage(5);
celluleLogo.Attributes["style"] = "text-align:center;";
if (!String.IsNullOrEmpty(lp._ARTICLE._FOURNISSEUR._LOGO))
{
System.Web.UI.WebControls.ImageButton logoF = new System.Web.UI.WebControls.ImageButton();
logoF.ImageUrl = ToolsImage.obtenirUrl(Request.Url.ToString()) + lp._ARTICLE._FOURNISSEUR._LOGO;
logoF.ID = "logoF" + i;
logoF.Width = Unit.Pixel(50);
logoF.Height = Unit.Pixel(50);
logoF.Click += new ImageClickEventHandler(logoF_Click);
celluleLogo.Controls.Add(logoF);
}
TableCell tcITMREF = new TableCell();
tcITMREF.CssClass = "cellulePanier";
tcITMREF.Width = Unit.Percentage(7);
tcITMREF.Text = lp._ARTICLE._ITMREF;
TableCell tcFAM = new TableCell();
if (j == 0)
{
tcFAM.CssClass = "cellulePanier";
tcFAM.Width = Unit.Percentage(6);
tcFAM.RowSpan = item.Count();
tcFAM.Text = lp._ARTICLE._FAM1._FAM1 + "-" + lp._ARTICLE._FAM2._FAM2 + "-" + lp._ARTICLE._FAM3._FAM3 +
"-" + lp._ARTICLE._FAM4._FAM4;
String chaineFamille = "Famille 1 : " + lp._ARTICLE._FAM1._FAM1 + " (" + lp._ARTICLE._FAM1._FAMDES + ") \n";
chaineFamille += "Famille 2 : " + lp._ARTICLE._FAM2._FAM2 + " (" + lp._ARTICLE._FAM2._FAMDES + ") \n";
chaineFamille += "Famille 3 : " + lp._ARTICLE._FAM3._FAM3 + " (" + lp._ARTICLE._FAM3._FAMDES + ") \n";
chaineFamille += "Famille 4 : " + lp._ARTICLE._FAM4._FAM4 + " (" + lp._ARTICLE._FAM4._FAMDES + ")";
tcFAM.ToolTip = chaineFamille;
}
TableCell tcLIBLONFOUR = new TableCell();
tcLIBLONFOUR.CssClass = "cellulePanier";
tcLIBLONFOUR.Width = Unit.Percentage(21);
Label lb = new Label();
lb.Text = lp._ARTICLE._LIBLONFOUR.Split('[')[0];
lb.Attributes["style"] = "text-decoration:underline;";
Label label = new Label();
label.Text = "<br/>" + lp._ARTICLE.obtenirChaineVenduParPourCommandeType();
LinkButton lbLIBLONFOUR = new LinkButton();
lbLIBLONFOUR.ID = "lbLIBLONFOUR" + i;
lbLIBLONFOUR.Controls.Add(lb);
lbLIBLONFOUR.Controls.Add(label);
lbLIBLONFOUR.Click += new EventHandler(liblonfour_Click);
tcLIBLONFOUR.Controls.Add(lbLIBLONFOUR);
TableCell tcDelai = new TableCell();
tcDelai.CssClass = "cellulePanier";
tcDelai.Width = Unit.Percentage(4);
tcDelai.Text = lp._ARTICLE._LTI + " j";
tcDelai.Attributes["Style"] = "text-align:center";
TableCell tcPANQTVVAL = new TableCell();
tcPANQTVVAL.CssClass = "cellulePanier";
tcPANQTVVAL.Width = Unit.Percentage(8);
tcPANQTVVAL.Attributes["Style"] = "text-align:left";
TextBox txtPANQTVVAL = new TextBox();
txtPANQTVVAL.ID = "txt" + i;
txtPANQTVVAL.AutoPostBack = true;
txtPANQTVVAL.Width = Unit.Pixel(30);
txtPANQTVVAL.CssClass = "txtLignePanier";
txtPANQTVVAL.TextChanged += new EventHandler(txtQTE_TextChanged);
if (lp._PANQTVVAL == 0)
{
txtPANQTVVAL.Attributes["style"] = "color:Red;";
}
if (lp._CREDAT == maxCREDAT)
{
txtPANQTVVAL.Attributes["style"] += "background-color:#8BEAB7";
}
Label labelLIBCOND = new Label();
labelLIBCOND.Text = lp._ARTICLE._LIBVTE;
ImageButton buttonMoins = new ImageButton();
buttonMoins.CssClass = "buttonMoins";
buttonMoins.ID = "buttonMoins" + i;
buttonMoins.Click += new ImageClickEventHandler(buttonMoins_Click);
buttonMoins.ImageUrl = "~/App_Themes/eWare_Theme/images/moins.png";
ImageButton buttonPlus = new ImageButton();
buttonPlus.CssClass = "buttonPlus";
buttonPlus.ID = "buttonPlus" + i;
buttonPlus.Click += new ImageClickEventHandler(buttonPlus_Click);
buttonPlus.ImageUrl = "~/App_Themes/eWare_Theme/images/plus.png";
if (lp._PANQTVVAL == 0)
{
txtPANQTVVAL.Text = "0";
this.buttonSubmit.Enabled = false;
}
else
{
txtPANQTVVAL.Text = ToolsString.obtenirNombreArrondi(lp._PANQTVVAL, 2);
}
tcPANQTVVAL.Controls.Add(txtPANQTVVAL);
tcPANQTVVAL.Controls.Add(labelLIBCOND);
TableCell tcButton = new TableCell();
tcButton.CssClass = "cellulePanier";
tcButton.Attributes["style"] = "text-align:left;";
tcButton.Width = Unit.Percentage(2);
tcButton.Controls.Add(buttonPlus);
tcButton.Controls.Add(buttonMoins);
TableCell tcPANPRIUF = new TableCell();
tcPANPRIUF.CssClass = "cellulePanier";
tcPANPRIUF.Width = Unit.Percentage(7);
tcPANPRIUF.Text = ToolsString.obtenirNombreArrondi(lp._ARTICLE._PRI * lp._ARTICLE._COEFCOND, 4) + " €";
tcPANPRIUF.Attributes["Style"] = "text-align:left";
TableCell tcTotal = new TableCell();
tcTotal.CssClass = "cellulePanier";
tcTotal.Width = Unit.Percentage(7);
tcTotal.Attributes["Style"] = "text-align:left";
decimal total = lp._PANQTVVAL * lp._ARTICLE._PRI * lp._ARTICLE._COEFCOND;
tcTotal.Text = ToolsString.obtenirNombreArrondi(total, 2) + " €";
TableCell tcPoubelle = new TableCell();
tcPoubelle.Width = Unit.Percentage(27);
tcPoubelle.ToolTip = "A l'entrepôt le " + lp._RCPDAT.ToString("D", CultureInfo.CurrentCulture);
DropDownList ddl = new DropDownList();
ddl.ID = "ddl" + i;
ddl.AutoPostBack = true;
ddl.SelectedIndexChanged += new EventHandler(listeLivraisonPanier_SelectedIndexChanged);
if (lp._ARTICLE._PRODINDISPO == 0)
{
List<String> _liste = MgtDateLivraison.obtenirInstance().obtenirJourLivraison(lp._ARTICLE._FOURNISSEUR._FOURNISSEUR, heureLimite, lp._ARTICLE._LTI);
if (lp._DLVRCPDAT < DateTime.Parse(_liste[0].Split('*')[0]))
{
String s = lp._DLVRCPDAT.ToString("D",
CultureInfo.CreateSpecificCulture("fr-FR"));
ddl.Items.Add(new System.Web.UI.WebControls.ListItem(s, s));
}
foreach (String s in _liste)
{
ddl.Items.Add(new System.Web.UI.WebControls.ListItem(s, s));
}
//Si ma date est inférieur au premier élément de ma liste, c'est que je suis hors borne
if (lp._DLVRCPDAT < DateTime.Parse(_liste[0].Split('*')[0]))
{
ddl.CssClass = "dateHorsBorne";
//this.buttonSubmit.Enabled = false;
}
}
if (ddl.Items.FindByValue(lp._DLVRCPDAT.ToString("D",
CultureInfo.CreateSpecificCulture("fr-FR"))) != null)
{
ddl.SelectedValue = lp._DLVRCPDAT.ToString("D",
CultureInfo.CreateSpecificCulture("fr-FR"));
}
else
{
ddl.SelectedValue = lp._DLVRCPDAT.ToString("D",
CultureInfo.CreateSpecificCulture("fr-FR")) + "*";
}
ImageButton buttonDuplicateRow = new ImageButton();
buttonDuplicateRow.ID = "buttonDuplicateRow" + i;
buttonDuplicateRow.CssClass = "buttonPlus";
buttonDuplicateRow.ToolTip = "Dupliquer la ligne";
buttonDuplicateRow.Click += new ImageClickEventHandler(buttonDuplicateRow_Click);
buttonDuplicateRow.ImageUrl = "~/App_Themes/eWare_Theme/images/plus.png";
ImageButton buttonSupprimer = new ImageButton();
buttonSupprimer.ID = "buttonSupprimer" + i;
buttonSupprimer.CssClass = "buttonSupprimer";
buttonSupprimer.OnClientClick = "return supprimerArticlePanier();";
buttonSupprimer.Click += new ImageClickEventHandler(buttonSupprimer_Click);
buttonSupprimer.ImageUrl = "~/App_Themes/eWare_Theme/images/logo_delete.png";
tcPoubelle.Controls.Add(ddl);
tcPoubelle.Controls.Add(buttonDuplicateRow);
tcPoubelle.Controls.Add(buttonSupprimer);
TableCell tcInfos = new TableCell();
tcInfos.Text = lp._ARTICLE._FOURNISSEUR._FOURNISSEUR + "." + lp._ARTICLE._ITMREF + "." +
lp._DLVRCPDAT.ToString().Split('*')[0] + "." + lp._RCPDAT.ToString() + "." + lp._ARTICLE._VENDUPAR +
"." + lp._ARTICLE._LIBCOND;
tcInfos.Attributes["style"] = "display:none";
//Si j == 0, je suis sur un nouveau regroupement, j'ajoute donc ma cellule à ma ligne.
if (j == 0)
{
tr.Cells.Add(tcFAM);
j = 1;
}
tr.Cells.Add(celluleLogo);
tr.Cells.Add(tcITMREF);
tr.Cells.Add(tcLIBLONFOUR);
tr.Cells.Add(tcPANQTVVAL);
tr.Cells.Add(tcButton);
tr.Cells.Add(tcPANPRIUF);
tr.Cells.Add(tcTotal);
tr.Cells.Add(tcDelai);
tr.Cells.Add(tcPoubelle);
tr.Cells.Add(tcInfos);
tabPanier.Rows.Add(tr);
i++;
}
感谢您的建议。
答案 0 :(得分：0)
为什么不使用转发器控件，而不是以编程方式构建所有表格单元格并将它们添加到控件集合中？它们相当轻巧，从性能的角度来看，转发器中的100行不应成为问题。
<asp:Repeater runat="server" ID="rptMyData">
<HeaderTemplate>
<table>
<thead>
<tr>
<th>Field1</th>
<th>Field2</th>
<th>Field3</th>
<th>Field4</th>
</tr>
</thead>
</HeaderTemplate>
<ItemTemplate>
<tr>
<td><asp:ImageButton runat="server" ImageUrl="<%# ((MyObject)Container.DataItem).Image1Url %>" /></td>
<td><asp:ImageButton runat="server" ImageUrl="<%# ((MyObject)Container.DataItem).Image2Url %>" /></td>
<td><asp:ImageButton runat="server" ImageUrl="<%# ((MyObject)Container.DataItem).Image3Url %>" /></td>
<td><%# ((MyObject)Container.DataItem).SomeTextProperty %></td>
</tr>
</ItemTemplate>
<FooterTemplate>
</table>
</FooterTemplate>
</asp:Repeater>
然后在你的代码隐藏中：
List<MyObject> myObjects = SomeClass.GetData();
rptMyData.DataSource = myObjects;
rptMyData.DataBind();
关于中继器的文档很多。