asked on

ListView PagePropertiesChanging event

I have 2 listview's on .aspx page.In the First ListView SelectedIndexChanging event second Listview databinding happens and displayed
protected void firstListView_SelectedIndexChanging(object sender, ListViewSelectEventArgs e)
{

DataTable dtHis =GetReportHistory(strPath);
DataView dataView = new DataView(dtHis);
dataView.Sort = "HistoryID DESC";

secondListView.DataSource = dataView;
secondListView.DataBind();
foreach (ListViewDataItem item in secondListView.Items)
{
DataKey currentDataKey = secondListView.DataKeys[item.DataItemIndex];
LinkButton btnlink = (LinkButton)item.FindControl("lnkSelect");
btnlink.OnClientClick = "window.open('Report_Form.aspx?Reportpath=" + strCNode + "&SnapshotID=" +
currentDataKey.Value.ToString() + "',null,'height=1000, width=1000,status= no,resizable= yes, scrollbars=yes, toolbar=no,location=no,menubar=no ');return false";

}

It is working fine and popup page is displaying with single click.

I have datapager associated with secondListView

<asp:DataPager ID="ItemDataPager" runat="server" PageSize="5" PagedControlID="secondListView">

<Fields>
<asp:NumericPagerField ButtonCount="3" />
</Fields>

</asp:DataPager>

protected void secondListView_PagePropertiesChanging(object sender, PagePropertiesChangingEventArgs e)
{
DataPager pager = (DataPager)((ListView)sender).FindControl("ItemDataPager");
pager.SetPageProperties(e.StartRowIndex, e.MaximumRows, false);
DataTable dtHistory =GetReportHistory(strChildNode);
DataView dataView = new DataView(dtHistory);
dataView.Sort = "HistoryID DESC";
secondListView.DataSource = dataView;
secondListView.DataBind();
foreach (ListViewDataItem item in secondListView.Items)
{

DataKey currentDataKey =secondListView.DataKeys[item.DataItemIndex];
LinkButton btnlink = (LinkButton)item.FindControl("lnkSelect");
btnlink.OnClientClick = "window.open('Report_Form.aspx?Reportpath=" + strCNode + "&SnapshotID=" +
currentDataKey.Value.ToString() + "',null,'height=1000, width=1000,status= no,resizable= yes, scrollbars=yes, toolbar=no,location=no,menubar=no ');return false";
}

}

DataKey currentDataKey =secondListView.DataKeys[item.DataItemIndex];at this line I am getting the Index OutOfRange exception.

Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index

How to fix this error.How to initialize the ListView LinkButtons with button OnClientClick after ListView PageProperties changing event.

Thanks.

ivan_vagunin can you help me.

jafrazee

Without knowing what your data looks like I believe there is a much easier way to do this.
Is to bind the the 2nd listview to the first listview via the datakeyname

KavyaVS

ASKER

I didn't understand.
Can you please explain ?

Thanks

jafrazee

I have an example that I just posted
www.tdsm.com/testscreen/default.aspx
(ignore the css I have to fix it)
But in the example I did not need to create any codebehind
I created a list view (parent) -- I bound it to a sql query. I set the datakeyname to my join ID (in this case the group ID)
<asp:ListView ID="ListView1" runat="server" DataSourceID="Groups" DataKeyNames="Group_id">

When I select a group from the first list view it will show all the employees that belong to that group in the second listview.
The query for the second listview will have a ControlParameter that looks like this.
<SelectParameters>
<asp:ControlParameter ControlID="ListView1" Name="group_id" PropertyName="SelectedValue"
Type="String" />
</SelectParameters>

jafrazee

sorry had a typeo
I have an example that I just posted
www.tdsm.com/testscreen/default.aspx
(ignore the css I have to fix it)
But in the example I did not need to create any codebehind
I created a list view (parent) -- I bound it to a sql query. I set the datakeyname to my join ID (in this case the group ID)
<asp:ListView ID="ListView1" runat="server" DataSourceID="Groups" DataKeyNames="Group_id">

When I select a group from the first list view it will show all the employees that belong to that group in the second listview.
The query for the second listview will have a ControlParameter that looks like this.
<SelectParameters>
<asp:ControlParameter ControlID="ListView1" Name="Group_id" PropertyName="SelectedValue"
Type="String" />
</SelectParameters>

KavyaVS

ASKER

Thanks for your reply. I am not using the sql datasource. I am creating a data table from object array in the code behind for ListView datasource.

This is my firstListView,secondListView source.

<asp:ListView ID="firstListView" runat="server" DataKeyNames="Path"
OnSelectedIndexChanging="firstListView_SelectedIndexChanging">
<LayoutTemplate>
<table style="border: solid 2px #336699;" cellspacing="0"
cellpadding="3" rules="all">
<tr style="background-color: #336699; color: White;">
<th>History</th>
<th>Name</th>
<th>Path</th>
<th>Type</th>
<th>ModifiedDate</th>
<th>ModifiedBy</th>
</tr>
<tbody>
<asp:PlaceHolder ID="ItemPlaceHolder" runat="server" />
</tbody>
</table>
</LayoutTemplate>
<ItemTemplate>
<tr>
<td>
<asp:LinkButton ID="lnkSelect" Text="History" CommandName="Select" runat="server" />
</td>
<td><asp:Label runat="server" ID="lblName"><%#Eval("Name") %></asp:Label></td>
<td><asp:Label runat="server" ID="lblPath"><%#Eval("Path") %></asp:Label></td>
<td><asp:Label runat="server" ID="lblType"><%#Eval("ModifiedDate")%></asp:Label></td>
<td><asp:Label runat="server" ID="lblDate"><%#Eval("Type")%></asp:Label></td>
<td><asp:Label runat="server" ID="Label1"><%#Eval("ModifiedBy")%></asp:Label></td>
</tr>
</ItemTemplate>
<AlternatingItemTemplate>
<tr style="background-color:#EFEFEF">
<td>
<asp:LinkButton ID="lnkSelect" Text="History" CommandName="Select" runat="server" />
</td>
<td><asp:Label runat="server" ID="lblName"><%#Eval("Name") %></asp:Label></td>
<td><asp:Label runat="server" ID="lblPath"><%#Eval("Path") %></asp:Label></td>
<td><asp:Label runat="server" ID="lblType"><%#Eval("ModifiedDate")%></asp:Label></td>
<td><asp:Label runat="server" ID="lblDate"><%#Eval("Type")%></asp:Label></td>
<td><asp:Label runat="server" ID="Label1"><%#Eval("ModifiedBy")%></asp:Label></td>
</tr>
</AlternatingItemTemplate>
<SelectedItemTemplate>
<tr style="background-color: #336699; color: White;">
<td>
<asp:LinkButton ID="lnkSelect" Text="History" CommandName="Select" runat="server"
ForeColor="White" />
</td>
<td><asp:Label runat="server" ID="lblName"><%#Eval("Name") %></asp:Label></td>
<td><asp:Label runat="server" ID="lblPath"><%#Eval("Path") %></asp:Label></td>
<td><asp:Label runat="server" ID="lblType"><%#Eval("ModifiedDate")%></asp:Label></td>
<td><asp:Label runat="server" ID="lblDate"><%#Eval("Type")%></asp:Label></td>
<td><asp:Label runat="server" ID="Label1"><%#Eval("ModifiedBy")%></asp:Label></td>
</tr>
</SelectedItemTemplate>

</asp:ListView>
</asp:TableCell>

</asp:TableRow>
<asp:TableRow SkinID="GeneralRowSkin">
<asp:TableCell>
</asp:TableCell>

<asp:TableCell >
<asp:ListView ID="secondListView" runat="server" DataKeyNames="HistoryID"
OnPagePropertiesChanging="secondListView_PagePropertiesChanging" OnSelectedIndexChanging="secondListView_SelectedIndexChanging">
<LayoutTemplate>
<table style="border: solid 2px #336699;" cellspacing="0"
cellpadding="3" rules="all">
<tr style="background-color: #336699; color: White;">
<th>Select</th>
<th>History ID</th>
<th>Creation Date</th>
<th>Size</th>
</tr>
<tbody>
<asp:PlaceHolder ID="itemPlaceHolder" runat="server" />
</tbody>
</table>
<asp:DataPager ID="ItemDataPager" runat="server" PageSize="5" PagedControlID="secondListView">

<Fields>
<asp:NumericPagerField ButtonCount="3" />
</Fields>

</asp:DataPager>

</LayoutTemplate>
<ItemTemplate>
<tr>
<td>
<asp:LinkButton ID="lnkSelect" Text="ViewInstance" CommandName="Select" runat="server" />
</td>
<td><asp:Label runat="server" ID="lblId"><%#Eval("HistoryID") %></asp:Label></td>
<td><asp:Label runat="server" ID="lblDate"><%#Eval("CreationDate")%></asp:Label></td>
<td><asp:Label runat="server" ID="lblSize"><%#Eval("Size") %></asp:Label></td>
</tr>
</ItemTemplate>
<AlternatingItemTemplate>
<tr style="background-color:#EFEFEF">
<td>
<asp:LinkButton ID="lnkSelect" Text="ViewInstance" CommandName="Select" runat="server" />
</td>
<td><asp:Label runat="server" ID="lblId"><%#Eval("HistoryID") %></asp:Label></td>
<td><asp:Label runat="server" ID="lblDate"><%#Eval("CreationDate")%></asp:Label></td>
<td><asp:Label runat="server" ID="lblSize"><%#Eval("Size") %></asp:Label></td>
</tr>

</AlternatingItemTemplate>
<SelectedItemTemplate>
<tr style="background-color: #336699; color: White;">
<td>
<asp:LinkButton ID="lnkSelect" Text="ViewInstance" CommandName="Select" runat="server"
ForeColor="White" />
</td>
<td><asp:Label runat="server" ID="lblId"><%#Eval("HistoryID") %></asp:Label></td>
<td><asp:Label runat="server" ID="lblDate"><%#Eval("CreationDate")%></asp:Label></td>
<td><asp:Label runat="server" ID="lblSize"><%#Eval("Size") %></asp:Label></td>
</tr>
</SelectedItemTemplate>

</asp:ListView>
</asp:TableCell>

</asp:TableRow>

</asp:Table>
</asp:TableCell>

Please see my question.Where can I initialize the ListView LinkButtons with button OnClientClick after ListView PageProperties changing event.

Thanks

ASKER CERTIFIED SOLUTION

jafrazee

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KavyaVS

ASKER

Thanks