Repeater控件绑定 Repeater控件绑定的三种方式
人气:0方式一
在aspx页面,写好需要循环输出的内容,一般包含用户自定义控件、服务器控件、Html格式的片段、和<%# Eval("Name")%>这种方式来动态显示获取到得数据列表:
<asp:Repeater ID="rpImage" runat="server">
<ItemTemplate>
<li>
<a href="//www.qb5200.com/lmfeng/archive/2012/03/06/<%# (Container.DataItem as ProductImage).ResourceUrl%>" class="<%# Container.ItemIndex == 0 ? "currImg " : "" %>">
<img src="//www.qb5200.com/lmfeng/archive/2012/03/06/<%# (Container.DataItem as ProductImage).ResourceUrl%>"
class="<%# (Container.DataItem as ProductImage).ImageVersion)%>">
<%# Eval("Name").ToString() %>
</a>
</li>
</ItemTemplate>
</asp:Repeater>
在cs文件,是用GetProductImageList方法来获取List<ProductImage>类型的数据列表,并绑定在Repeater控件上面:
上面的不包含用户自定义控件、服务器控件,所以不需要ItemDataBound事件来对单个的数据项进行个性化的赋值
protected override void BindDataSource()
{
this.rpImage.DataSource = GetProductImageList();
this.rpImage.DataBind();
}
方式二
在aspx页面,这次包含了用户自定义控件,所以需要用到ItemDataBound事件来对列表中的每一个用户自定义控件进行个性化的赋值,用户自定义控件可以有公用的方法或者属性,
让我们在ItemDataBound事件中赋值:
<asp:Repeater ID="gvItemList" runat="server" EnableViewState="false">
<ItemTemplate>
<li>
<UCCommon:ImageCell ID="imageCell" runat="server" />
<a href="//www.qb5200.com/lmfeng/archive/2012/03/06/###" title='<%# Eval("Name").ToString() %>' href='//www.qb5200.com/lmfeng/archive/2012/03/06/<%# Eval("Code").ToString()%>'>
<UCCommon:ProductFullNameCell ID="productFullNameCell" runat="server" />
</a>
<UCCommon:UCProductControlCell ID="productControlCell" runat="server"/>
</li>
</ItemTemplate>
</asp:Repeater>
在cs文件,用户自定义控件可以有公用的方法或者属性,让我们在ItemDataBound事件中赋值:
protected override void BindDataSource()
{
this.gvItemList.DataSource = productList;
this.gvItemList.DataBind();
}
protected override void OnInit(EventArgs e)
{
this.gvItemList.ItemDataBound += new RepeaterItemEventHandler(this.OnItemListDataBound);
base.OnInit(e);
}
private void OnItemListDataBound(object sender, RepeaterItemEventArgs e)
{
ProductCellInfo productItem = (ProductCellInfo)e.Item.DataItem;
if (productItem != null)
{
ProductFullNameCell productName;
ImageCell image;
ProductControlCell productControlCell;
foreach (Control sub in e.Item.Controls)
{
productName = sub as ProductFullNameCell;
if (productName != null)
{
productName.InitProductFullName(productItem.Title, productItem.PromotionTitle, DispalyContentLength);
continue;
}
image = sub as ImageCell;
if (image != null)
{
image.InitImageCell2(productItem.ID, productItem.Code, productItem.Name, productItem.ImageUrl, productItem.ImageVersion);
continue;
}
productControlCell = sub as ProductControlCell;
if (productControlCell != null)
{
productControlCell.InitProductControlCell(productItem);
continue;
}
}
}
}
方式三:
在aspx页面,可以显示设置OnItemDataBound属性,就不用像方式二那样,在cs文件中的OnInit方法中动态绑定,代码如下:
<asp:Repeater ID="rptListCell" runat="server" OnItemDataBound="RptAllOnItemDataBound">
<ItemTemplate>
<li>
<a href='//www.qb5200.com/lmfeng/archive/2012/03/06/<%#Eval("ID"))>' title='<%#Encode(Eval("Name")) %>'>
<span><%#Encode(Eval("Name")) %></span>
<asp:PlaceHolder ID="pNew" runat="server" Visible="false"></asp:PlaceHolder>
<asp:PlaceHolder ID="pHot" runat="server" Visible="false"></asp:PlaceHolder>
<asp:Literal ID="literalValidGiftOption" runat="server"></asp:Literal>
</a>
</li>
</ItemTemplate>
</asp:Repeater>
在cs文件:
protected override void BindDataSource()
{
base.BindDataSource();
this.rptListCell.DataSource = this.List;
this.rptListCell.DataBind();
}
protected void RptAllOnItemDataBound(object sender, RepeaterItemEventArgs e)
{
CategoryInfo category = (CategoryInfo)e.Item.DataItem;
PlaceHolder pHot = e.Item.FindControl("pHot") as PlaceHolder;
PlaceHolder pNew = e.Item.FindControl("pNew") as PlaceHolder;
Literal lit = e.Item.FindControl("literalValidGiftOption") as Literal;
switch (category.PromotionStatus)
{
case "H":
pHot.Visible = true;
break;
case "N":
pNew.Visible = true;
break;
default:
break;
}
lit.Text = category.Name;
}
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