Async/partial postback datagrid issues - asp.net

Question

I'm trying to get an aspx datagrid control to perform a post that results in a partial postback (asynchronous) rather than a full postback. I've added scriptmanager, an update panel, and a content template wrapper and yet it still refreshes the page when i select a data item and click add.
<asp:ScriptManager ID="ScriptManager1" runat="server" EnablePartialRendering="True" ></asp:ScriptManager>
<asp:UpdatePanel ID="upPnlLookup" runat="server" UpdateMode="Conditional" ChildrenAsTriggers="True">
<ContentTemplate>
<asp:DataGrid ID="ObjectPropertiesDataGrid" CellPadding="5" CellSpacing="5" OnItemCommand="ObjectPropertiesDataGrid_ItemCommand" OnItemDataBound="ObjectPropertiesDataGrid_ItemDataBound" AutoGenerateColumns="False" CssClass="List" DataKeyField="id" runat="server">
<asp:TemplateColumn>
<ItemTemplate>
<asp:Panel ID="multiValuePanel" Visible="false" runat="server">
<table>
<tr>
<td valign="top">
<asp:Button ID="addButton" CssClass="button" CommandName="AddValue" Width="65px" Text="Add" runat="server"></asp:Button>
<asp:Button ID="addAllButton" CssClass="button" CommandName="AddAllValue" Width="85px" Text="Add All" runat="server"></asp:Button>
<br />
<asp:ListBox ID="listBoxValues" Width="250px" CssClass="listbox" SelectionMode="Multiple" runat="server"></asp:ListBox>
</td>
<td valign="top">
<asp:Button ID="removeButton" CssClass="button" Text="Remove" Width="65px" CommandName="RemoveValue" runat="server"></asp:Button>
<asp:Button ID="removeAllButton" CssClass="button" Text="Remove All" Width="85px" CommandName="RemoveAllValue" runat="server"></asp:Button>
<br />
<asp:ListBox ID="listBoxCurrentValues" Width="250px" CssClass="listbox" SelectionMode="Multiple" runat="server"></asp:ListBox>
</td>
</tr>
</table>
</asp:Panel>
</ItemTemplate>
</asp:TemplateColumn>
</asp:DataGrid>
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="addButton" EventName="Click" />
<asp:AsyncPostBackTrigger ControlID="removeButton" EventName="Click" />
<asp:AsyncPostBackTrigger ControlID="addAllButton" EventName="Click" />
<asp:AsyncPostBackTrigger ControlID="removeAllButton" EventName="Click" />
</Triggers>
</asp:UpdatePanel>
Code Behind (snippets/relevant methods):
protected void Page_Load(object sender, EventArgs e)
{
SaveButton.Click += SaveButton_Click;
btnAddChild.Click += btnAddChild_Click;
btnAddChildTop.Click += btnAddChildTop_Click;
DeleteButton.Click += DeleteButton_Click;
CancelButton.Click += CancelButton_Click;
CopyButton.Click += CopyButton_Click;
NewButton.Click += NewButton_Click;
AddSiteButton.Click += AddSiteButton_Click;
RemoveSiteButton.Click += RemoveSiteButton_Click;
ActivateAll.Click += ActivateAll_Click;
DeactivateAll.Click += DeactivateAll_Click;
startDateCalender.SelectionChanged += startDateCalender_SelectionChanged;
endDateCalender.SelectionChanged += endDateCalender_SelectionChanged;
startDateCalender.Load += startDateCalender_Load;
endDateCalender.Load += endDateCalender_Load;
CacheButton.Click += CacheButton_Click;
if (IsPostBack)
return;
if (String.IsNullOrEmpty(Request["id"]))
{
Response.Redirect("default.aspx");
}
else
{
LoadData();
}
}
private void LoadData()
{
Properties = ContentProviderFactory.GetContentProvider().GetObjectTypeProperties(CurrentContentObject.Type, false);
uploadImage.DataSource = DataHelper.GetObjecTypeImageSizes(CurrentContentObject.Type);
uploadImage.Container = CurrentContentObject;
foreach (var property in from Property p in Properties
let objectProperty = CurrentContentObject.GetProperty(p.Id)
where objectProperty == null
select p)
{
CurrentContentObject.Items.Add(property);
}
ObjectPropertiesDataGrid.DataSource = Properties;
var children = ContentProviderFactory.GetContentProvider().GetContentObjectChildren(CurrentContentObject.Id);
dgObjectChildren.DataSource = children.Where(c => c.Active);
dgObjectInactiveChildren.DataSource = children.Where(c => !c.Active);
dgObjectParents.DataSource = ContentProviderFactory.GetContentProvider().GetContentObjectParents(CurrentContentObject);
ddlContentTypes.DataSource = ContentProviderFactory.GetContentProvider().GetContentObjectTypes(CurrentContentObject.Type);
ddlContentTypesTop.DataSource = ContentProviderFactory.GetContentProvider().GetContentObjectTypes(CurrentContentObject.Type);
SitesListBox.DataSource = ContentProviderFactory.GetContentProvider().GetContentObjectSitesAvailable(CurrentContentObject.Id);
SetSitesListBox.DataSource = ContentProviderFactory.GetContentProvider().GetContentObjectSites(CurrentContentObject.Id);
if (CurrentContentObject.Id == 0)
{
Response.Status = "301 Moved Permanently";
Response.AddHeader("Location", "/admin/Contentobjects/ObjectNotFound.aspx");
Response.End();
}
const string DATE_FORMAT = "MM/dd/yyyy";
if (CurrentContentObject.StartDate.ToString(DATE_FORMAT) != SqlDateTime.MinValue.Value.ToString(DATE_FORMAT))
{
startDateTextBox.Text = CurrentContentObject.StartDate.ToShortDateString();
}
if (CurrentContentObject.EndDate.ToString(DATE_FORMAT) != SqlDateTime.MaxValue.Value.ToString(DATE_FORMAT))
{
endDateTextBox.Text = CurrentContentObject.EndDate.Date.ToShortDateString();
}
DataBind();
//if its an orphan child/child, remove 'add child' button and pulldown
if (ddlContentTypes.Items.Count == 0)
{
btnAddChild.Visible = false;
ddlContentTypes.Visible = false;
}
if (ddlContentTypesTop.Items.Count == 0)
{
ddlContentTypesTop.Visible = false;
btnAddChildTop.Visible = false;
}
// Add delete confirmation javascript
DeleteButton.Attributes["onclick"] = "return confirm_object_delete();";
RenderTypeHeader();
RenderBreadcrumb();
if (CurrentContentObject.ParentId == 0)
{
UserInfo.AddToHistory(CurrentContentObject.Id, CurrentContentObject.Name);
}
else
{
UserInfo.AddToHistory(CurrentContentObject.Parent.Id, CurrentContentObject.Parent.Name);
}
startCalenderPanel.Visible = false;
endCalenderPanel.Visible = false;
}
protected void ObjectPropertiesDataGrid_ItemCommand(object sender, DataGridCommandEventArgs e)
{
var id = (int)ObjectPropertiesDataGrid.DataKeys[e.Item.ItemIndex];
switch (e.CommandName.ToLower())
{
case "clearimage":
{
// Delete the image (does not physically remove the image but will be replaced if new a new one updates)
var imageProperty = e.Item.FindControl("imageProperty") as Image;
var tbFileName = e.Item.FindControl("tbFileName") as TextBox;
tbFileName.Text = string.Empty;
imageProperty.ImageUrl = string.Empty;
break;
}
case "addvalue":
{
// Adds a property value to the list of properites
var listBoxValues = e.Item.FindControl("listBoxValues") as ListBox;
var listBoxCurrentValues = e.Item.FindControl("listBoxCurrentValues") as ListBox;
foreach(var item in listBoxValues.Items.Cast<ListItem>().Where(item => item.Selected))
{
// Add item to the set values
listBoxCurrentValues.Items.Add(item);
}
for (var i = listBoxValues.Items.Count - 1; i >= 0; i--)
{
if (listBoxCurrentValues.Items.FindByValue(listBoxValues.Items[i].Value) != null)
{
listBoxValues.Items.RemoveAt(i);
}
}
SortListBox(listBoxCurrentValues);
break;
}
case "removevalue":
{
var listBoxValues = e.Item.FindControl("listBoxValues") as ListBox;
var listBoxCurrentValues = e.Item.FindControl("listBoxCurrentValues") as ListBox;
for(var i = listBoxCurrentValues.Items.Count - 1; i >= 0; i--)
{
if(listBoxCurrentValues.Items[i].Selected)
{
listBoxValues.Items.Add(listBoxCurrentValues.Items[i]);
listBoxCurrentValues.Items.RemoveAt(i);
}
}
SortListBox(listBoxValues);
break;
}
case "addallvalue":
{
var listBoxValues = e.Item.FindControl("listBoxValues") as ListBox;
var listBoxCurrentValues = e.Item.FindControl("listBoxCurrentValues") as ListBox;
foreach(ListItem item in listBoxValues.Items)
{
// Add item to the set values
listBoxCurrentValues.Items.Add(item);
}
for(var i = listBoxValues.Items.Count - 1; i >= 0; i--)
{
if(listBoxCurrentValues.Items.FindByValue(listBoxValues.Items[i].Value) != null)
{
listBoxValues.Items.RemoveAt(i);
}
}
SortListBox(listBoxCurrentValues);
break;
}
case "removeallvalue":
{
var listBoxValues = e.Item.FindControl("listBoxValues") as ListBox;
var listBoxCurrentValues = e.Item.FindControl("listBoxCurrentValues") as ListBox;
for (var i = listBoxCurrentValues.Items.Count - 1; i >= 0; i--)
{
listBoxValues.Items.Add(listBoxCurrentValues.Items[i]);
listBoxCurrentValues.Items.RemoveAt(i);
}
SortListBox(listBoxValues);
break;
}
case "addalldatalistvalue":
{
var dataListValues = e.Item.FindControl("DataListValues") as DataList;
var dataListCurrentValues = e.Item.FindControl("CurrentDataListValues") as DataList;
foreach (DataListItem item in dataListValues.Items)
{
ImageLink imageLink = ImageLinks[id][item.ItemIndex];
CurrentImageLinks[id].Add(imageLink);
}
for (var i = dataListValues.Items.Count - 1; i >= 0; i--)
{
if (CurrentImageLinks[id].Contains(ImageLinks[id][i]))
{
ImageLinks[id].RemoveAt(i);
}
}
dataListValues.DataSource = ImageLinks[id];
dataListCurrentValues.DataSource = CurrentImageLinks[id];
dataListValues.DataBind();
dataListCurrentValues.DataBind();
break;
}
case "removealldatalistvalue":
{
var dataListValues = e.Item.FindControl("DataListValues") as DataList;
var dataListCurrentValues = e.Item.FindControl("CurrentDataListValues") as DataList;
for (var i = dataListCurrentValues.Items.Count - 1; i >= 0; i--)
{
ImageLinks[id].Add(CurrentImageLinks[id][i]);
CurrentImageLinks[id].RemoveAt(i);
}
dataListValues.DataSource = ImageLinks[id];
dataListCurrentValues.DataSource = CurrentImageLinks[id];
dataListValues.DataBind();
dataListCurrentValues.DataBind();
break;
}
}
}

Answer 1

I think you have a runtime error in Page_Load. for example if you have this wrong codes, your page will refresh instead of update:
protected void Page_Load(object sender, EventArgs e)
{
if (IsPostBack)
{
Response.Redirect("WebForm1.aspx");
int.Parse("");
}
}

Answer 2

also try this :
Control me = FindControl(Request.Params.Get("__EVENTTARGET"));
if(FindControl(me!=addButton && me!=removeButton && me!=addAllButton && me!=removeAllButton)
{
if (IsPostBack)
return;
if (String.IsNullOrEmpty(Request["id"]))
{
Response.Redirect("default.aspx");
}
else
{
LoadData();
}
}