![](/img/trans.png)
[英]How to transfer selected data(datalist) from one page to another page without using session in asp.net?
[英]How to transfer item from one datalist to other datalist?
我有一个数据清单
<asp:DataList ID="dlstImage" runat="server" RepeatDirection="Horizontal" RepeatColumns="5"
CellSpacing="8">
<ItemTemplate>
<asp:ImageButton ID="Image" runat="server" ImageUrl='<%#"~/Controls/ShowImage.ashx?FileName=" +DataBinder.Eval(Container.DataItem, "FilePath") %>'
OnCommand="Select_Command" CommandArgument='<%# Eval("Id").ToString() +";"+Eval("FilePath")+";"+Eval("Index") %>' /><br />
<asp:Label ID="lbl" runat="server" Text="Figure"></asp:Label><%# dlstImage.Items.Count + 1%>
</ItemTemplate>
</asp:DataList>
在通过uplodify上传完成上传后,我在其中绑定图像,现在我又有一个数据列表,上下两个btn,
<asp:ImageButton ID="ibtnMoveUp" runat="server" ImageUrl="~/App_Themes/Default/Images/moveup.bmp"
Style="height: 16px" ToolTip="MoveUp The Item" />
<asp:ImageButton ID="ibtnMoveDown" runat="server" ImageUrl="~/App_Themes/Default/Images/movedown.bmp"
ToolTip="MoveDown The Item" />
<asp:DataList ID="dlstSelectedImages" runat="server" RepeatDirection="Horizontal"
RepeatColumns="5" CellSpacing="8">
<ItemTemplate>
<asp:ImageButton ID="Image" runat="server" /><br />
<asp:Label ID="lbl" runat="server" Text="Figure"></asp:Label><%# dlstImage.Items.Count + 1%>
</ItemTemplate>
</asp:DataList>
我的两个数据列表都在同一个webuser控件中,即datalist1和datalist2,并且我上下有2个btn,当我从datalist1中选择一个图像并单击btn时,则所选图像应移至datalist2。 怎么做? 有人请帮助我,
您需要处理一个 DataList的ItemCommand
事件,在该事件中,您必须将所选数据(图像)复制到两个 DataList
另一个dataSource中,并从一个 DataList
的数据源中删除该项目。
标记:
<asp:DataList
ID="DataList1"
runat="server"
OnItemCommand="PerformMove"
>
<ItemTemplate>
<br /><%#Eval("Text") %>
<asp:Button ID="btn1"
runat="server"
Text="Move"
CommandName="cmd"
CommandArgument='<%#Eval("Text") %>'
/>
</ItemTemplate>
</asp:DataList>
<asp:DataList ID="DataList2" runat="server">
<ItemTemplate>
<br /><%#Eval("Text") %>
</ItemTemplate>
</asp:DataList>
后台代码(.cs)
public class Data
{
public string Text { get; set; }
public override int GetHashCode()
{
return Text.GetHashCode();
}
public override bool Equals(object obj)
{
return GetHashCode() == obj.GetHashCode();
}
}
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
List<Data> list1 = new List<Data >()
{
new Data() { Text="One"},
new Data() { Text="Two"},
new Data() { Text="Three"},
};
List<Data> list2 = new List<Data>();
Session["list1"] = list1;
Session["list2"] = list2;
DataList1.DataSource = Session["list1"];
DataList1.DataBind();
DataList2.DataSource = Session["list2"];
DataList2.DataBind();
}
}
protected void PerformMove(object source, DataListCommandEventArgs e)
{
if (e.CommandName == "cmd")
{
List<Data> list1 = Session["list1"] as List<Data>;
List<Data> list2 = Session["list2"] as List<Data>;
list1.Remove(new Data() { Text=e.CommandArgument.ToString() });
list2.Add(new Data() { Text = e.CommandArgument.ToString() });
DataList1.DataSource = Session["list1"];
DataList1.DataBind();
DataList2.DataSource = Session["list2"];
DataList2.DataBind();
}
}
我正在使用此代码,它对我来说效果很好。
ArrayList ImgArry = new ArrayList();
path = objGetBaseCase.GetImages(TotImgIds);
ImgArry.Add(SelImgId);
ImgArry.Add(SelImgpath);//image name
ImgArry.Add(SelImgName);//image path
//path.Remove(ImgArry);
List<ArrayList> t = new List<ArrayList>();
if (newpath.Count > 0)
t = newpath;
t.Add(ImgArry);
newpath = t;
for (int i = 0; i < newpath.Count; i++)
{
ArrayList alst = newpath[i];
newtb.Rows.Add(Convert.ToInt32(alst[0]), alst[1].ToString(), alst[2].ToString(), i);
}
dlstSelectedImages.DataSource = newtb;
DataBind();
path = objGetBaseCase.GetImages(TotImgIds);
for (int i = 0; i < path.Count; i++)
{
ArrayList alst = path[i];
tb.Rows.Add(Convert.ToInt32(alst[0]), alst[1].ToString(), alst[2].ToString(), i);
}
dlstImage.DataSource = tb;
DataBind();
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.