Develop Reference

ASP.NET (C#) - ListView

In past, i worked on ListViews (.net 2.0) using a custom Template field but what i am trying to achieve here is the following
I am now working on .net 4.6
So basically a list which shows items like above and on mouse-hover few options show up as shown in the following screenshot
I also have to trigger those option to do different things -
How can I do that in asp.net, may I please have some code references.
Cheers
P.S.
This is a rough example of how i am creating the List Item Template (as requested)
<asp:ListView ID="ListView1" runat="server" DataSourceID="SqlDataSource1">
<AlternatingItemTemplate>
<table >
<tr>
<td ><asp:Image ID="image1" ImageUrl='<%# Bind("url") %>' runat="server" Width="98px" /> </td>
<td><h2><asp:Label ID="_label" runat="server" Text ='<%# Bind("title") %>'></asp:Label></h2><asp:Label ID="Label1" runat="server" Text ='<%# Bind("description") %>'></asp:Label></td>
</tr>
</table>
</AlternatingItemTemplate>
<EmptyDataTemplate>
No data was returned.
</EmptyDataTemplate>
<ItemSeparatorTemplate>
<br />
</ItemSeparatorTemplate>
<ItemTemplate>
<table >
<tr>
<td ><asp:Image ID="image1" ImageUrl='<%# Bind("url") %>' runat="server" Width="98px" /> </td>
<td><h2><asp:Label ID="_label" runat="server" Text ='<%# Bind("title") %>'></asp:Label></h2><asp:Label ID="Label1" runat="server" Text ='<%# Bind("description") %>'></asp:Label></td>
</tr>
</table>
</ItemTemplate>
<LayoutTemplate>
<ul id="itemPlaceholderContainer" runat="server" style="">
<li runat="server" id="itemPlaceholder" />
</ul>
<div style="">
</div>
</LayoutTemplate>
</asp:ListView>
I can add any html formatting to this template e,g i can add ASP:button etc but i don't know how to trigger those to perform certain tasks.

One easy way to achieve your requirement is to keep those buttons there but invisible and show them up when the parent container is hovered. following as a quick sample
aspx
<asp:ListView ID="ListView1" runat="server">
<ItemTemplate>
<tr class="row-data">
<td>
<asp:Label ID="NameLabel" runat="server" Text='<%# Eval("Name") %>' />
</td>
<td>
<asp:Label ID="PositionLabel" runat="server" Text='<%# Eval("Position") %>' />
</td>
<td>
<div class="btn-area">
<asp:Button runat="server" Text="Button1" />
<asp:Button runat="server" Text="Button2" />
</div>
</td>
</tr>
</ItemTemplate>
<LayoutTemplate>
<table id="itemPlaceholderContainer" runat="server" border="0" style="">
<tr runat="server" style="">
<th runat="server">
Name
</th>
<th runat="server">
Position
</th>
<th>
</th>
</tr>
<tr id="itemPlaceholder" runat="server">
</tr>
</table>
</LayoutTemplate>
</asp:ListView>
css
.btn-area
{
display: none;
}
.row-data:hover .btn-area
{
display: block;
}
code-behind
protected void Page_Load(object sender, EventArgs e)
{
ListView1.DataSource = new List<dynamic>() {
new { Name = "Andy", Position = "PG"},
new { Name = "Bill", Position = "SD"},
new { Name = "Caroline", Position = "Manager"}
};
ListView1.DataBind();
}
UPDATE
ListView ItemCommand can capture the postback by button pressed and CommandName makes you able to recognize which button fired it.
<asp:Button runat="server" Text="Button1" CommandName="c1" />
<asp:Button runat="server" Text="Button2" CommandName="c2" />
code-behind
protected void ListView1_ItemCommand(object sender, ListViewCommandEventArgs e)
{
if (e.CommandName == "c1")
{
// do something when button1 pressed
}
else if (e.CommandName == "c1")
{
// do something when button2 pressed
}
}

how to show an image in image control of which image path is stored in database when user selects a value in dropdownlist in asp.net?

I have a database which is shown below in the image :
Image of database
Here is the image of the form :
Image of the Form
In this form i want to show up the image in image control of which image path is stored up in database and according to subcategory value from the drop down list when user selects it how can i do it please help ... Thank You
Guys here is the source code of my form i have added sqldatasource and bind the dropdown list with sqldatasource .........
<form method="post" enctype="multipart/form-data">
<table border="0" width="450px" height="500px" align="center" class="tableshadow">
<tr>
<td colspan="2" class="toptd" style="color: white; font-size: 24px; text-align: center;
height: 40px; background-color: #60b2e7">
Update Subcategory
</td>
</tr>
<tr>
<td class="lefttxt">
<asp:Label ID="Label1" runat="server" Text="Select Subcategory:"></asp:Label>
</td>
<td>
<asp:DropDownList ID="DropDownList1" runat="server" Height="35px" Width="134px" DataSourceID="SqlDataSource1"
DataTextField="subcatname" DataValueField="subcatid">
<asp:ListItem Text="Select category" Value="0"></asp:ListItem>
</asp:DropDownList>
<asp:Button ID="btnshow" runat="server" OnClick="btnshow_Click" Text="Show" Width="94px" />
</td>
</tr>
<tr>
<td class="lefttxt">
<asp:Label ID="Label2" runat="server" Text="Subcategory Name:"></asp:Label>
<br />
</td>
<td>
<asp:TextBox ID="txtsubcategoryname" runat="server"></asp:TextBox>
<br />
<asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ControlToValidate="txtsubcategoryname"
ErrorMessage="*Please Enter the Subcategory Name" Font-Bold="True" Font-Italic="True"
Font-Size="X-Small" ForeColor="Red"></asp:RequiredFieldValidator>
</td>
</tr>
<tr>
<td class="lefttxt">
<asp:Label ID="Label3" runat="server" Text="Select Category:"></asp:Label>
</td>
<td>
<asp:DropDownList ID="DLCategory" runat="server" Height="35px" Width="146px" DataSourceID="SqlDataSource1"
DataTextField="categoryname" DataValueField="categoryname">
<asp:ListItem Text="Select category" Value="0"></asp:ListItem>
</asp:DropDownList>
<tr>
<td class="lefttxt">
<asp:Label ID="Label6" runat="server" Text="Category Name:"></asp:Label>
<br />
</td>
<td>
<asp:TextBox ID="txtcategoryname" runat="server"></asp:TextBox>
<br />
<asp:RequiredFieldValidator ID="RequiredFieldValidator2" runat="server" ControlToValidate="txtcategoryname"
ErrorMessage="*Please Enter the Category Name" Font-Bold="True" Font-Italic="True"
Font-Size="X-Small" ForeColor="Red"></asp:RequiredFieldValidator>
</td>
</tr>
<tr>
<td class="lefttxt">
<asp:Label ID="Label4" runat="server" Text="Old Pic:"></asp:Label>
</td>
<td>
<input type="hidden" name="h1" value="" /><asp:Image ID="Image1" runat="server" />
</td>
</tr>
<tr>
<td class="lefttxt">
<asp:Label ID="Label5" runat="server" Text="Upload New Pic:"></asp:Label>
</td>
<td>
<asp:FileUpload ID="FileUpload1" runat="server" Width="225px" />
</td>
</tr>
<tr>
<td>
</td>
<td>
<asp:Button ID="btnupdate" runat="server" Text="Update" OnClick="btnupdate_Click" />
</td>
</tr>
</table>
</form>
<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:ToursandTravelsConnectionString %>"
SelectCommand="SELECT [subcatid], [subcatname], [categoryname], [pic] FROM [subcategory]">
</asp:SqlDataSource>

Providing the 'pic' column in database holds links to the images are absolute, it also depends on how you have set the drop down list up.
You will need an OnSelectedIndexChanged for the drop down which does the following:
Selects the pic url from the database where subcategory = dropdown value or text. (this depends on how you set the drop-down list up).
With that obtained value set the pic to the one you have obtained.
You need the following, providing code would make it easier.
In you ASP file add the following to the dropdown:
OnSelectedIndexChanged="drp_SelectedIndexChanged" AutoPostBack="True"
Within code behind you need:
protected void drp_SelectedIndexChanged(object sender, EventArgs e) {
//SQL To obtain url for image based on drop down selection
//providing code makes this easier
//with return url:
Image1.ImageUrl = //returned url
}

Are you having issue in showing image in image control ? Can you right click on that container and check path in properties ?
You can use AutoPostBack as True and "OnSelectedIndexChanged" to call server function and update image control based on result.
Or you can use JQuery to show images in Div tag.
jQuery(document).ready(function(){
$("#dropdownID").change(function() {
$.ajax({
url: "SericeFunction name",
success: function(msg){
.....<bind img tag >
}
});
});
});

Thank You All of you guys especially #John for your syntax you provided thanks alot.. Below is the code :
protected void btnshow_Click(object sender, EventArgs e)
{
using (var cn = new SqlConnection(#"Data Source=.\SQLEXPRESS;AttachDbFilename=D:\PROJECT SEM6\Online Tours and Travels\App_Data\ToursandTravels.mdf;Integrated Security=True;User Instance=True"))
using (var cmd = cn.CreateCommand())
{
cn.Open();
cmd.CommandText = "select pic from subcategory where subcatid = '"+DropDownList1.Text+"'";
cmd.Parameters.AddWithValue("#subcatid",DropDownList1.Text);
using (var reader = cmd.ExecuteReader())
{
if (reader.Read())
{
var filePath = reader.GetString(0);
// For this to work images must be stored inside the web application.
// filePath must be a relative location inside the virtual directory
// hosting the application. Depending on your environment some
// transformations might be necessary on filePath before assigning it
// to the image url.
Image1.ImageUrl =("~/"+filePath);
}
}
}

Repeater Item can't find NamingContainer

I recently switched a ComboBox in my repeater to a SuggestComboBox (found: here) because it is a contains search rather than a starts-with search. Previously, I was using NamingContainer of that ComboBox to find nearby elements. My new SuggestComboBox does not have this value but in my research on this problem, it looks like all children of a repeater should have this already?
"the NamingContainer property is available in code to any instance of that class or of a derived class." (found: here)
What am I missing?
Here's my repeater:
<asp:Repeater ID="repHW" runat="server" OnItemCommand="rep_ItemCommand">
<HeaderTemplate>
<table style="width:100%; padding-bottom:10px" id="HWtable">
<tr style="font-weight: bold"><td>Product</td><td>Part Number</td><td>Cost</td><td>Unit Price</td><td>Quantity</td><td>Price</td><td>Delete</td></tr>
</HeaderTemplate>
<ItemTemplate>
<tr>
<asp:HiddenField ID="Category" Value="Hardware" runat="server"/>
<td><asp:Label ID="Product" runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "Product.Name") %>' /></td> <!--TODO: make this clickable to edit -->
<td><asp:Label ID="PartNumber" runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "Product.PartNumber") %>' /></td>
<td><asp:Label ID="PartCost" runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "Product.Cost") %>' /></td>
<td><asp:Label ID="UnitPrice" runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "Product.Price") %>' /></td>
<td><asp:Label ID="Quantity" runat="server" Text='<%# Eval("Quantity") %>' /></td>
<td><asp:Label ID="Price" runat="server" Text='<%# Eval("Total") %>' /></td>
<td><asp:Button class="btn btn-danger" ID="DeleteHardware" runat="server" Text="Delete" CommandName="Delete" CommandArgument='<%# Container.ItemIndex %>'/></td>
</tr>
</ItemTemplate>
<FooterTemplate>
<tr>
<asp:HiddenField ID="AddCategory" Value="Hardware" runat="server"/>
<td><SuggestComboBox runat="server" ID="AddProduct" AutoCompleteMode="SuggestAppend" AutoPostBack="true" OnSelectedIndexChanged="ProductSelected" OnDataBinding="LoadHardwareProducts"/></td>
<td><asp:TextBox runat="server" ID="AddPartNumber" ClientIDMode="static"/></td>
<td><asp:TextBox runat="server" ID="AddPartCost" ClientIDMode="static"/></td>
<td><asp:TextBox runat="server" ID="AddUnitPrice" ClientIDMode="static"/></td>
<td><asp:TextBox runat="server" ID="AddQuantity" ClientIDMode="static"/></td>
<td><asp:Button class="btn btn-success" ID="AddHardware" runat="server" Text="Add" CommandName="Add" CommandArgument='<%# Container.ItemIndex %>' onClientClick="return EmptyFieldCheck('Hardware');"/></td>
</tr>
</table>
</FooterTemplate>
</asp:Repeater>
and here's my function I am trying to access the other elements in:
protected void ProductSelected(Object source, EventArgs e)
{
SuggestComboBox temp = (SuggestComboBox)source;
List<Product> results = session.Query<Product>()
.Where(x => x.Name == temp.Text)
.ToList();
if(results.Count > 0)
{
Product p = results[0];
var repParent = temp.NamingContainer; //this broke
TextBox partNum = (TextBox)repParent.FindControl("AddPartNumber");
TextBox partCost = (TextBox)repParent.FindControl("AddPartCost");
TextBox unitPrice = (TextBox)repParent.FindControl("AddUnitPrice");
TextBox quantity = (TextBox)repParent.FindControl("AddQuantity");
partNum.Text = p.PartNumber;
partCost.Text = p.Cost.ToString();
unitPrice.Text = p.Price.ToString();
quantity.Text = p.DefaultQuantity.ToString();
}
}

Saving textfield for each item in repeater

It seems I have had a lot of questions today.
What i want to do is save the text for each image.
I'm getting the right text for each picture into the textboxes at the moment.
The code behind:
var car = GarageBLL.LoadCar(Convert.ToInt32(CarId),
Convert.ToInt32(_memberId)); ImageRepeater.DataSource = car.Images;
ImageRepeater.DataBind();
protected void FinalizeNewCar(object sender, EventArgs e) {
Response.Redirect("/amcargarasjen"); }
**Code here for saving each edit into the right ImageId.**
ASP:
<asp:Repeater runat="server" ID="ImageRepeater">
<ItemTemplate>
<table>
<tr>
<td>
<a class="deleteLink" href="#" rel="<%#Eval("ImageId")%>" title="">
<asp:Image runat="server" ImageUrl="/Content/Images/Garage/DeleteButton.png" /></a>
<asp:Image Width="60" Height="45" ID="ImgCar" ImageUrl='<%# String.Format("/garageimages/{0}/{1}.{2}", CarId, Eval("ImageId"), Eval("Extension")) %>' runat="server" />
<asp:TextBox runat="server" Text='<%# Eval("Description") %>' ID="txtText"></asp:TextBox>
</td>
</tr>
</table>
</ItemTemplate>
</asp:Repeater>
<br />
<asp:Button ID="Button1" runat="server" Text="Fullfør" OnClick="FinalizeNewCar" />
Anyone got any ideas on how to do that?

Modify your Repeater HTML markup like below. Note the addition of a Hidden field to keep the reference of the current image ID.
<asp:Repeater runat="server" ID="ImageRepeater">
<ItemTemplate>
<table>
<tr>
<td>
<a class="deleteLink" href="#" rel="<%#Eval("ImageId")%>" title="">
<asp:Image runat="server" ImageUrl="/Content/Images/Garage/DeleteButton.png" /></a>
<asp:Image Width="60" Height="45" ID="ImgCar" ImageUrl='<%# String.Format("/garageimages/{0}/{1}.{2}", CarId, Eval("ImageId"), Eval("Extension")) %>' runat="server" />
<asp:TextBox runat="server" Text='<%# Eval("Description") %>' ID="txtText"></asp:TextBox>
<asp:HiddenField runat="server" Value='<%# Eval("ImageId") %>' ID="txtImageId"></asp:TextBox>
</td>
</tr>
</table>
</ItemTemplate>
</asp:Repeater>
<br />
<asp:Button ID="Button1" runat="server" Text="Fullfør" OnClick="FinalizeNewCar" />
CODE FinalizeNewCar Event Handler
protected void FinalizeNewCar(object sender, EventArgs e)
{
foreach (RepeaterItem item in ImageRepeater.Items)
{
Int32 imageId = Convert.ToInt32(((HiddenField) item.FindControl("txtImageId")).Value);
string description = ((TextBox)item.FindControl("txtText")).Text;
//You will get the imageId description here.
//Write your code to update the datatbase.
}
}

How to Edit data in nested Listview

I am using listview to display a list of items and a nested listview to show list of features to each item. Both parent and child listview need to able Insert,Edit and delete operation. It works fine for parent listview. But when I try to edit an child item, The edit button does not take it into Edit mode. Can you please suggest me what I am missing in my code?
<asp:ListView ID="lvParent" runat="server"
OnItemDataBound="lvParent_ItemDataBound"
onitemcanceling="lvParent_ItemCanceling" onitemcommand="lvParent_ItemCommand"
DataKeyNames="ItemID" onitemdeleting="lvParent_ItemDeleting"
oniteminserting="lvParent_ItemInserting" >
<LayoutTemplate>
<asp:PlaceHolder ID="itemPlaceholder" runat="server"></asp:PlaceHolder>
<div align="right">
<asp:Button ID="btnInsert" runat="server" Text="ADD Item" onclick="btnInsert_Click"/>
</div>
</LayoutTemplate>
<ItemTemplate>
<table runat="server" cellpadding="0" cellspacing="0" border="0" width="100%">
<tr>
<td>
<div id="dvDetail">
<span >Description</span>
<asp:TextBox ID="txtDescription" runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "Description") %>' TextMode="MultiLine" ></asp:TextBox>
</div>
<div id="dvFeature" >
<span>Feature List</span>
<asp:ListView ID="lvChild" runat="server"
InsertItemPosition="LastItem"
DataKeyNames="FeatureID" OnItemCommand="lvChild_ItemCommand"
OnItemCanceling="lvChild_ItemCanceling" OnItemDeleting="lvChild_ItemDeleting"
OnItemEditing="lvChild_ItemEditing" OnItemInserting="lvChild_ItemInserting" OnItemUpdating="lvChild_ItemUpdating"
DataSource='<%# DataBinder.Eval(Container.DataItem, "FeatureList") %>' >
<LayoutTemplate>
<ul >
<asp:PlaceHolder runat="server" ID="itemPlaceHolder" ></asp:PlaceHolder>
</ul>
</LayoutTemplate>
<ItemTemplate>
<li>
<span class="dvList"><%# DataBinder.Eval(Container.DataItem, "FeatureTitle")%></span>
<div class="dvButton" >
<asp:ImageButton ID="btnEdit" runat="server" ImageUrl="/Images/edit_16x16.gif" AlternateText= "Edit" CommandName="Edit" CommandArgument='<%# DataBinder.Eval(Container.DataItem, "FeatureID") %>' Width="12" Height="12" />
<asp:ImageButton ID="btnDelete" runat="server" ImageUrl="/Images/delete_16x16.gif" AlternateText= "Delete" CommandName="Delete" CommandArgument='<%# DataBinder.Eval(Container.DataItem, "FeatureID") %>' Width="12" Height="12" />
</div>
</li>
</ItemTemplate>
<EditItemTemplate>
<li>
<asp:TextBox ID="txtFeature" Text='<%# DataBinder.Eval(Container.DataItem, "FeatureTitle")%>' runat="server"></asp:TextBox>
<div class="dvButton">
<asp:ImageButton ID="btnUpdate" runat="server" ImageUrl="/Images/ok_16x16.gif" AlternateText= "Update" CommandName="Update" CommandArgument='<%# DataBinder.Eval(Container.DataItem, "FeatureID") %>' Width="12" Height="12" />
<asp:ImageButton ID="btnCancel" runat="server" ImageUrl="/Images/delete_16x16.gif" AlternateText= "Cancel" CommandName="Cancel" Width="12" Height="12" CausesValidation="false" />
</div>
</li>
</EditItemTemplate>
<InsertItemTemplate>
<asp:TextBox ID="txtFeature" runat="server"></asp:TextBox>
<div class="dvButton">
<asp:ImageButton ID="btnInsert" runat="server" ImageUrl="/Images/ok_16x16.gif" AlternateText= "Insert" CommandName="Insert" Width="12" Height="12" />
<asp:ImageButton ID="btnCancel" runat="server" ImageUrl="/Images/delete_16x16.gif" AlternateText= "Cancel" CommandName="Cancel" Width="12" Height="12" CausesValidation="false" />
</div>
</InsertItemTemplate>
</asp:ListView>
</div>
</td>
</tr>
<tr>
<td align="right">
<div id="dvButton" >
<asp:Button ID="btnSave" runat="server" Text="Save"
CommandName="Save"
CommandArgument='<%# DataBinder.Eval(Container.DataItem, "ItemID") %>' />
<asp:Button ID="btnDelete" runat="server" Text="Delete" CssClass="Cancel"
CommandName="Delete"
CommandArgument='<%# DataBinder.Eval(Container.DataItem, "ItemID") %>' />
</div>
</td>
</tr>
</table>
</ItemTemplate>
</asp:ListView>
Code Behind:
protected void Page_Load(object sender, EventArgs e)
{
if (Page.IsPostBack == false)
{
BindData();
}
}
private void BindData()
{
MyDataContext data = new MyDataContext();
var result = from itm in data.ItemLists
where itm.ItemID == iItemID
select new
{
itm.ItemID,
itm.Description,
FeatureList = itm.Features
};
lvParent.DataSource = result;
lvParent.DataBind();
}
protected void lvChild_ItemEditing(object sender, ListViewEditEventArgs e)
{
ListView lvChild = sender as ListView;
lvChild.EditIndex = e.NewEditIndex;
lvChild.DataBind();
}
Edit:
protected void lvChild_ItemEditing(object sender, ListViewEditEventArgs e)
{
ListView lvChild = sender as ListView;
lvChild.EditIndex = e.NewEditIndex;
lvChild.DataBind();
}
If I use "lvChild.DataBind()" in 'ItemEditing' event, the total list of child items goes away if I click 'edit'
protected void lvChild_ItemEditing(object sender, ListViewEditEventArgs e)
{
ListView lvChild = sender as ListView;
lvChild.EditIndex = e.NewEditIndex;
}
if I get rid of 'lvChild.Databind' in ItemEditing event, it goes to Edit mode after clicking the 'edit' button twice . And though it shows textbox control of EditItemTemplate, it appears as a blank textbox (does not bind existing value to edit).

This is an interesting problem. Almost certainly a databinding issue. In order to enter edit mode you must do two things:
1) Set the EditIndex
2) Call DataBind()
In the case of nested repeaters though... when does Render get called? I suspect you will have to call DataBind() on the PARENT in order to render everything correctly. That being the case you may have to then set the EditIndex AGAIN, since you are rebinding the parent.
EDIT:
OK... I just tried this with a nested GridView and I did NOT have to DataBind() the parent to get the sub grid to enter edit mode. Now I have to downvote my own answer. :|

hope that will serve someone, somewhere.
Here is my code to get that to work:
1) I have a Listview wich hold a user control when editing. This User cotnrol has itself a listview inside
<asp:ListView runat=server ID=C_LV_MyObjects DataKeyNames="Id"
OnItemDataBound=DataBoundMyObjects OnItemEditing=ItemEditing
>
<LayoutTemplate>
<table runat=server id="itemPlaceholderContainer">
<tr>
<th>
Description
</th>
</tr>
<tr runat="server" id="itemPlaceholder">
</tr>
</table>
</LayoutTemplate>
<ItemTemplate>
<tr>
<td>
text...
</td>
<td>
<asp:LinkButton runat="server" CommandName="Edit" Text="Edit"></asp:LinkButton>
</td>
<td>
<asp:LinkButton runat="server" CommandName="Delete" Text="Delete"></asp:LinkButton>
</td>
</ItemTemplate>
<EditItemTemplate>
<tr>
<td colspan=3>
<MyTag:MyUC ID=C_UC_MyUserControl runat=server
OnEditing=MyObjectEditing
/>
</td>
</tr>
</EditItemTemplate>
<EmptyDataTemplate>
No results found!
</EmptyDataTemplate>
</asp:ListView>
The code c# for this listview is as follows :
public int EditIndexComposition;
protected void ItemEditing(object sender, ListViewEditEventArgs e)
{
C_LV_MyObjects.EditIndex = e.NewEditIndex;
C_LV_MyObjects.DataBind();
}
protected void MyObjectEditing(object sender, EventArgs e)
{
ListViewEditEventArgs MyEvent = (ListViewEditEventArgs)e;
if (MyEvent != null)
EditIndexComposition= MyEvent.NewEditIndex;
C_LV_MyObjects.DataBind();
}
protected void DataBoundMyObjects(object sender, ListViewItemEventArgs e)
{
MyUC uc = (MyUC)e.Item.FindControl("C_UC_MyUserControl");
if (uc!=null)
{
uc.EditIndex = EditIndexComposition;
ListViewDataItem dataItem = (ListViewDataItem)e.Item;
MyObject obj= (MyObject)dataItem.DataItem;
uc.DataSource=Myservice.GetDatasource(obj.Id);
uc.DataBind();
}
}
and the code of my Usercontrol is as follows :
<asp:PlaceHolder runat="server" ID="C_PH_ObjComposition">
<asp:ListView runat="server" ID="C_LV_AppaltatoreComposizione" DataSource="<% # DataSource %>"
DataKeyNames="Id" OnItemEditing="ItemEditing">
etc...
<ItemTemplate>
<tr>
<td>
<asp:LinkButton runat="server" CommandName="Edit" Text="Edit"></asp:LinkButton>
</td>
</tr>
</ItemTemplate>
<EditItemTemplate>
<tr>
<td>
Edit Mode
</td>
</tr>
</EditItemTemplate>
</asp:ListView>
</asp:PlaceHolder>
with the following code c# :
public int EditIndex
{
get {return C_LV_ObjComposition.EditIndex;}
set { C_LV_ObjComposition.EditIndex=value;}
}
public event EventHandler Editing;
protected void ItemEditing(object sender, ListViewEditEventArgs e)
{
C_LV_ObjComposition.EditIndex = e.NewEditIndex;
if (Editing != null)
Editing(this, e);
}
When clicking on the edit button of the innerlistview, we store the index that was clicked and we trigger a function in the first container user control. This function is going to store in a global value the index cliked and triggers a databind of the outter list. Doing so we get the onitemdatabound, that will recreate our usercontrol with the proper values, we can then before the databinding of the usercontrol assign the index of the editing row.
That's all if you have any questions , please feel free to answer..
ciao!