在数据列表中绑定图像可见属性 [英] Binding image visible property in datalist
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问题描述
我有一个只应为高级会员显示的图像.我有一个名为ispaid的数据库字段，该字段区分免费和高级客户.所以我该如何绑定可见属性.. ??? plz可以帮助我.图片ID为 Image3
I have an image which should be displayed only for premium members.. i have a database field named ispaid which differtiates free and premium customers. so how do i bind visible property..???plz help me . Image Id is Image3
<asp:DataList ID="CandidateFProfileDataList" RepeatColumns="1" CellPadding="0" CellSpacing="0"
RepeatDirection="Vertical" runat="server" HorizontalAlign="Left" ItemStyle-VerticalAlign="Top"
DataKeyField="CandidateId"
OnItemDataBound="CandidateFProfile_ItemDataBound" Height="364px"
style="margin-right: 0px">
<ItemStyle VerticalAlign="Top"></ItemStyle>
<ItemTemplate>
<table width="260px" border="0" cellpadding="0" cellspacing="0">
<tr>
<td colspan="4" style="height: 5px">
</td>
</tr>
<tr>
<td style="width: 70px" valign="top" align="center">
<a id="hrefFProfile" runat="server">
<asp:Image ID="Image1" Height="70px" Width="70px" ImageUrl='<%# isAvailF(PhotoImagesPath + Eval("PhotoPath")) %>'
BorderColor="#0155A7" BorderStyle="Solid" BorderWidth="1px"
runat="server" /></a>
</td>
<td style="width: 10px">
</td>
<td valign="top" style="width: 182px">
<table cellpadding="0" cellspacing="0" border="0" width="182px">
<tr class="featuredjianbrides">
<td style="width: 80px">
Profile ID
</td>
<td style="width: 3px">
:
</td>
<td style="width: 105px">
<asp:Label ID="lblCanidtaeID1" runat="server" Text='<%#Eval("CandidateID")%>' Visible="False"></asp:Label>
<a id="hrefProfileDetails1" runat="server">
<asp:Label ID="lblFCandidateCode" runat="server"
Text='<%# "LP -" + Eval("CandidateID") %>'></asp:Label></a>
</td>
<td>
<asp:Image ID="Image3" runat="server" ImageUrl="App_Themes/Images/paid.png"
Visible="<%# ispaid() %>" /></td>
</tr>
<tr>
<td colspan="3" class="smalltxt">
<asp:Label runat="server" ID="lblFAge" Text='<%#Eval("CandidateAge")%>' class="smalltxt"></asp:Label>Yrs,
<asp:Label runat="server" ID="lblFHeight" Text='<%#Eval("Height")%>' class="smalltxt"></asp:Label>
cms
</td>
</tr>
<tr>
<td class="profilematter" align="left">
Cast
</td>
<td>
:
</td>
<td colspan="3" align="left">
<asp:Label runat="server" class="profilematter" ID="lblFCast" Text='<%#Eval("ReligionCastName")%>'></asp:Label>
</td>
</tr>
<tr>
<td nowrap="nowrap" class="profilematter" align="left">
Mother Tongue
</td>
<td>
:
</td>
<td colspan="3" class="profilematter" align="left">
<asp:Label runat="server" ID="lblFMotherTongue" Text='<%#Eval("MotherTongue")%>'></asp:Label>
</td>
</tr>
<tr>
<td class="profilematter" align="left">
Location
</td>
<td>
:
</td>
<td colspan="3" class="profilematter" align="left">
<asp:Label runat="server" ID="lblFLocation" Text='<%#Eval("Location")%>'></asp:Label>
</td>
</tr>
</table>
</td>
<td style="width: 5px">
</td>
</tr>
<tr>
<td colspan="4" style="height: 5px">
</td>
</tr>
</table>
</ItemTemplate>
</asp:DataList>
推荐答案
例如
for example
if(premium){
yourDataTable.Rows[rowNumber][image]="<img src="yourImageUrl" style="display:inline" alt="" />";}
else{
yourDataTable.Rows[rowNumber][image]="<img src="yourImageUrl" style="display:none" alt="" />";}
在您的数据列表中
In your DataList
<asp:datalist xmlns:asp="#unknown">
<table>
<tr>
<td><%#DataBinder.Eval(Container.DataItem,"image") %></td>
</tr>
</table>
</asp:datalist>
嗨
将支付的值设置为一个字段.
Hi
Set the paid value to a field.
<ItemTemplate>
<asp:TextBox ID="IsPaid" runat="server" Text='<%#Eval("IsPaid")%>' />
</ItemTemplate>
但是，这是一种肮脏的方式.您可以在后面的代码中获取数据源，将其转换为相应的对象(可能是数据集)，然后使用候选ID来获得支付的值就可以了.由于我不确定您的数据源，因此我提供了另一种方法.
然后在Item DataBound事件处理程序中，检查isPaid并隐藏图像.
However this is a dirty way. You can get the datasource in code behind , convert to the corresponding object (may be dataset) and get the paid value using the candidate id would be fine. As I am not sure about your data source I am giving this alternate way.
Then in your Item DataBound event handler Check the isPaid and make the image hidden or not.
protected void CandidateFProfile_ItemDataBound(object sender, DataListItemEventArgs e)
{
//check the is Paid. If true make the image visible
//if you have better way to check the paid value here that would be fine.
TextBox isPaid = (TextBox)e.Item.FindControl("IsPaid");
string paid = isPaid.Text;
if (paid == "false" || paid == "0")
{
e.Item.FindControl("image3").Visible = false;
}
e.Item.FindControl("IsPaid").Visible=false;
}
检查存储过程是否返回IsPaid Column ..的值，如果是，则将可见属性与Eval("IsPaid")绑定.
Check whether the stored procedure returns The value of IsPaid Column .. if yes then bind the visible property with Eval("IsPaid").
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