As i click on the Insert new Row, the Grid goes into databinding and i just want to disable the databinding to the Edit Template during insert new row, how is it possible ?
Secondly how is it possible that during edit mode it is able to recognize a dataitem to which the textbox is binded to and during add new row command it displays the error ‘Telerik.WebControls.GridInsertionObject does not contain a property’ ??
I tried
protected void RadGrid1_ItemCommand(object sender, GridCommandEventArgs e)
{
if (e.CommandName == RadGrid.InitInsertCommandName)
{
e.Canceled = true;
}
}
But this code just cancel the whole insert item template creating process..
itemcommand event will fire only on edit,insert,delete,update command on grid rows.
but if you want to avoid databinding use
GRIDVIEW_ITEMDATABOUND()
{
}
try this
Related
I am using listbox inside panorama, like if panorama has 5 items then each panorama item contains a listbox.
The listitem is not getting fired at times, mainly for the second time. For the first them when the list item is clicked then it navigates to next page. When i come back and again i tap on the listitem is not getting fired.
Am using SelectionChanged for list click listener.
I have got a suggestion from web search to use stackpannel instead of grid in , but in some places am unable to use stack pannel because of the component arrangement.
Please suggest me does changing to stackpannel is the only way or is there any other solution for this.
Any kind of ideas are welcome.
When one item is selected in a ListBox, it keeps the record of the selectedindex. When the same element is tapped again, there is no change in the selectedindex and hence the SelectionChanged is not fired. Hence what you can do is setting the selectedindex back to -1 after each selection or after the back navigation to the listbox page
//In the onnavigatedto function, set the listbox selectedindex to -1
protected override void OnNavigatedTo(System.Windows.Navigation.NavigationEventArgs e)
{
MyListBox.SelectedIndex = -1;
}
And modify your selectionchanged event like this
private void MyListBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
//let our code run only if index is not -1
if (MyListBox.SelectedIndex != -1)
{
//Your selectionchanged code
}
}
Hope this helps
UPDATE: For your Panorama case
private void MyListBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
ListBox listbox = (sender as ListBox);
//let our code run only if index is not -1
if (listbox.SelectedIndex != -1)
{
//Your selectionchanged code
At the end of it set the index back to -1
listbox.SelectedIndex = -1;
}
}
I'm trying to add ListItems to a ListBox (ListBox3) depending on the selectedItem of another ListBox (ListBox1). The problem is , The Items aren't added to the Listbox.
Here's the code :
private void createlist()
{
if (listBox1.SelectedValue.ToString().Equals("EPL"))
{
ListBoxItem manchesterunited = new ListBoxItem();
manchesterunited.Content = "Manchester United";
listBox3.Items.Add(manchesterunited);
}
}
private void listBox1_SelectionChanged(object sender, System.Windows.Controls.SelectionChangedEventArgs e)
{
createlist();
}
createlist() does the changes and is called in the SelctionChanged() event of ListBox1.
New to C# and WP7 programming , any help will be much appreciated.
Create the lists in your viewmodel and bind the listbox to a list<> in your viewmodel say SelectedList. When the user selects the item from ListBox1 just change the value of SelectedList with the appropriate List and Notify the property changed event. And it will be done.!
i think you program not run in mvvm structure.
make sure your logic is right. you can make a breakpoint at the line
ListBoxItem manchesterunited = new ListBoxItem();
Ensure run those code in if code block.
the way add a control in a listbox is correct.
I am using UltraDropDown control to bind a column of one UltraGrid control to list People category in list format.
This drop-down control have more than 25 items and show 8 categories Max, it's very fine. Now whenever I click on drop-down control to see all people category list then i have to hold scroll bar and drag down to see all categories. but I want to show all categories when I mouse scroll and its automatically move up and down to show all, and one more thing I want, when i mouse hover on listed categories then hover item should be shaded or colored.
Please help on both topic.
Thanks & Regards,
Shashi Bhushan Jaiswal
I believe that the first requirement is by default as behavior. Are you handling the MouseWheel event for this to not work?
Here is the code for your second requirement but I do not know if it is a good approach to use the MouseHover event as you like but this is your requirement:
void ultraDropDown1_MouseHover(object sender, EventArgs e)
{
if (cell != null && isInItem) {cell.Cell.Appearance.BackColor = Color.Red;}
}
CellUIElement cell;
bool isInItem = false;
private void ultraDropDown1_MouseEnterElement(object sender, Infragistics.Win.UIElementEventArgs e)
{
if (e.Element is EditorWithTextDisplayTextUIElement && e.Element.Parent.Parent is CellUIElement)
{
cell = (CellUIElement)e.Element.Parent.Parent;
isInItem = true;
}
else isInItem = false;
}
I have a simple class inheriting RadGrid. I am adding a button to the RadGrid and a Click Event handler to that button. The button is correctly added in the required position and the click event handler is firing, but radGrid.ExportToExcel() is not doing anything. In fact, upon click and when page posts back, the button disappears. Why is this happening?
I tried to add the button control to the Page.Form control collection, but still nothing happens.
[ToolboxData("<{0}:RadGridDp runat=server></{0}:RadGridDp>")]
public class RadGridDP : RadGrid
{
public RadGridDP()
{
}
protected override void OnLoad(EventArgs e)
{
base.OnLoad(e);
Button btnExport = new Button();
btnExport.ID = "Export";
btnExport.Text = "Export";
btnExport.Click += new EventHandler(btnExport_Click);
btnExport.CommandArgument = this.ID;
this.MasterTableView.Controls.Add(btnExport);
}
void btnExport_Click(object sender, EventArgs e)
{
Button btnExport = (Button)sender;
string RadGridId = btnExport.CommandArgument.ToString();
RadGridDP radGrid = (RadGridDP)this.Parent.Parent.FindControl(RadGridId);
radGrid.ExportSettings.IgnorePaging = true;
radGrid.ExportSettings.OpenInNewWindow = true;
radGrid.ExportSettings.ExportOnlyData = true;
radGrid.MasterTableView.ExportToExcel();
}
}
When I do same thing in a UserControl and use that UserControl on any page, it works fine. What's the difference?
I found out the solution. Whenever RadGrid Loads, it calls various events in this fashion:
1. Page OnLoad
m. RadGrid OnLoad
x. NeedDataSource
and upon click of the button (added in the manner above), events are called in this fashion
1. Page_OnLoad
m. RadGrid OnLoad
n. btnExport_Click
x. NeedDataSource
(as for strange serial numbers, these events may have other events in between, but the order of occurance is correct)
so, entire Grid is rebound with the data, and hence command to exportPdf is flushed. So nothing happens.
Interestingly, there's no need of adding one extra button, telerik provides its own buttons to do so. which can be customized as well(by implementing ITemplate). This is how am generating Reports now(though not specific to the original question):
[ToolboxData("<{0}:RadGridDP runat=server></{0}:RadGridDP>")]
public class RadGridDP : RadGrid
{
//custom logic
public RadGridDP()
{
this.ItemCreated += new GridItemEventHandler(RadGrid_ItemCreated);
this.Load += new EventHandler(RadGridDP_Load);
this.ItemCommand += new GridCommandEventHandler(RadGrid_ItemCommand);
this.PdfExporting += new OnGridPdfExportingEventHandler(RadGridDP_PdfExporting);
this.GridExporting += new OnGridExportingEventHandler(RadGridDP_GridExporting);
this.ExportSettings.ExportOnlyData = true;
this.ExportSettings.IgnorePaging = true;
// this.ExportSettings.OpenInNewWindow = true;
DoPdfFormatting();
DoExcelFormatting();
}
protected void RadGridDP_PdfExporting(object sender, GridPdfExportingArgs e)
{
e.RawHTML = e.RawHTML.Replace("border=\"1\"", "").Replace("style=\"", "style=\" border:0.5px Solid black; ")
.Replace("<thead>", String.Format("<thead>{0}", TableHeader)).Replace("</tbody>", String.Format("{0}</tbody>", TableFooter));
}
protected void RadGridDP_GridExporting(object sender, GridExportingArgs e)
{
e.ExportOutput = e.ExportOutput.Replace("<thead>", String.Format("<thead>{0}", TableHeader))
.Replace("</tbody>", String.Format("{0}</tbody>", TableFooter));
}
}
so basically i had to handle PdfExporting(for Pdf) and GridExporting(for excel)..
I had to handle Load, ItemCommand and ItemCreated as well. While the former one was required for some conditional logic, later two were required for formatting of the PDF document
When using a bindingNavigator and bindingSource and clicking a move button or add button or delete button, the bindingSource completes its action code before the click handler of the button (i.e. user code)
This prevents a save action on the row change. I'd like to find a bindingSource hook, something like 'beforeRowChange'.
I can subclass the bindingSource and get ahead of the add or remove event but that doesn't cover all the row move actions.
Any clues, suggestions welcome.
The BindingNavigator has a property called 'DeleteItem'.
Change this property from 'BindingNavigatorDeleteItem' to '(none)'.
private void bindingNavigatorDeleteItem_Click(object sender, EventArgs e)
{
if ( bindingSource.Count > 0 )
{
if (MessageBox.Show("Confirm Delete?", "Warning", MessageBoxButtons.YesNo) == System.Windows.Forms.DialogResult.Yes)
{
bindingSource.RemoveCurrent();
}
}
}