or
2 answers
233 views
Hi,
I am displaying customer data [Id, Name and Address] in grid view. I also need to display some calculated value “Customer Points” in the grid. For the “Customer Points” I have added a GridViewTextBoxColumn “txtCustomerPoints” to the grid.
For displaying data in “txtCustomerPoints” i am using the CellFormatting Event as below:
private void RadGridView1_CellFormatting(object sender, CellFormattingEventArgs e)
{
try
{
string columnUniqueName = ((GridViewDataColumn)e.CellElement.ColumnInfo).UniqueName;
if (columnUniqueName == "txtCustomerPoints " )
{
if (IsColumnExistsInGrid(RadGridView1.MasterGridViewTemplate, columnUniqueName))
{
RadGridView1.GridElement.BeginUpdate();
e.CellElement.RowInfo.Cells[columnUniqueName].Value = "Some Calculated Value";
RadGridView1.GridElement.EndUpdate();
}
}
}
catch (Exception ex)
{
throw ex;
}
}
But this generate an error on this line:
e.CellElement.RowInfo.Cells[columnUniqueName].Value = "Some Calculated Value";
The error is:
ex = {"Object reference not set to an instance of an object."}
StackTrace " at MSMainPrj.FormsEmbedded.Booking. RadGridView1_ValueChanging(Object sender, ValueChangingEventArgs e) in D:\\Users\\Yaqub.Ahmad\\CS2\\trunk\\code\\MSMainPrj\\FormsEmbedded\\Booking.cs:line 1755\r\n at Telerik.WinControls.UI.RadGridView.OnValueChanging(Object sender, ValueChangingEventArgs e)\r\n at Telerik.WinControls.UI.RadGridView.CallValueChanging(Object sender, ValueChangingEventArgs e)\r\n at Telerik.WinControls.UI.GridViewCellInfo.set_Value(Object value)\r\n at MSMainPrj.Libraries.TelerikGridHelper.SetGridColumnValue(RadGridView grid, CellFormattingEventArgs e, String columnName, Object value) in D:\\Users\\Yaqub.Ahmad\\CS2\\trunk\\code\\MSMainPrj\\Libraries\\TelerikGridHelper.cs:line 292" string
TargetSite {Void RadGridView1_ValueChanging(System.Object, Telerik.WinControls.UI.ValueChangingEventArgs)} System.Reflection.MethodBase {System.Reflection.RuntimeMethodInfo}
Kindly help me to update a custom column's value.
Thanks.
6 answers
215 views
Hello,
I'm having trouble with some controls I've added to gridview cells. I've followed the procedure in your documentation to add the controls via the CellFormatting Event. I have added a RadCheckBox to one column and a RadButton to another. Everything works fine at first, but if there's enough rows for scrolling to occur, the controls will actually migrate from one row to another when scrolling is performed. In fact, if you scroll down via the scroll bar, the controls stay in their correct row, but if you scroll up, the controls seem to stay put while the rows rotate around them.
Please help!
Thanks!
Jeremy
Julian Benkov
Telerik team
answered
on
27 Aug 2009
3 answers
343 views
private void managerGrid_ValueChanged(object sender, EventArgs e)
{
if (sender is GridCheckBoxCellElement)
{
GridCheckBoxCellElement cell = (GridCheckBoxCellElement)sender;
RadCheckBoxEditor checkbox = cell.Children[0] as RadCheckBoxEditor; <- Error
How???
Julian Benkov
Telerik team
answered
on
27 Aug 2009
4 answers
342 views
Hi,
I'm using RadDock and I am trying to find a way within the RadDock.DockWindowClosing event handler to know if the form on the ActiveWindow has set Cancel = true in the Form.Closing handler. I manually close the form in the DockWindowClosing handler like this:
I'm using RadDock and I am trying to find a way within the RadDock.DockWindowClosing event handler to know if the form on the ActiveWindow has set Cancel = true in the Form.Closing handler. I manually close the form in the DockWindowClosing handler like this:
103 HostWindow window = dockMain.ActiveWindow as HostWindow;
104 Form form = window.Content.FindForm();
105 form.Close();
The form object is the correct form. There may be a reason why the form should not be closed and will set
the Cancel property to true; I can not find a way to detect this state. I really need to be able to cancel
a DockWindowClosing event based on the underlying form closing event.
How can I do this?
Thanks,
Mike
Georgi
Telerik team
answered
on
27 Aug 2009
1 answer
155 views
I the Beta Version there was an AutoDispose Property on RadDock, that was removed with 9.2 - now I assume the right way to have AutoDispose Functionality is to set the CloseAction Property on the Document or Tool Windows as needed(?).
The docs are unclear, even the introduction text mentions the AutodDispose Property, And it can be found searching the online Reference / Docs.
Regards
Erwin
Georgi
Telerik team
answered
on
27 Aug 2009
1 answer
109 views
Hello
I have a radgrid gouped by a collumn (categoryid)
I need to get the value of categoryid when the user clicks on the goup row. I tried to use currentrow, but all the cellvalues are null. DataBindItem is also null.
Thank you!
I have a radgrid gouped by a collumn (categoryid)
I need to get the value of categoryid when the user clicks on the goup row. I tried to use currentrow, but all the cellvalues are null. DataBindItem is also null.
Thank you!
Laura Serban
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answered
on
27 Aug 2009
2 answers
180 views
Hi!
I have a RadGridView for windows on my form which is data bound. Now according to requirements, i have set Autogeneratecolumns to false and programmatic-ally added some GridViewTextBox columns. The user can also add a new Row by clicking Add new Row Button. But before adding a new Row i need to check whether, user has left some of the columns empty or filled them with invalid values. IN that case i need to prompt the user about mistakes and cancel the add new Row. I have tried so much but i could not validate the grid. I desire to set error on each column instead of Rows.I have found some solutions but was unable to use any of them. Any help will be greatly appreciated.
Thanks
I have a RadGridView for windows on my form which is data bound. Now according to requirements, i have set Autogeneratecolumns to false and programmatic-ally added some GridViewTextBox columns. The user can also add a new Row by clicking Add new Row Button. But before adding a new Row i need to check whether, user has left some of the columns empty or filled them with invalid values. IN that case i need to prompt the user about mistakes and cancel the add new Row. I have tried so much but i could not validate the grid. I desire to set error on each column instead of Rows.I have found some solutions but was unable to use any of them. Any help will be greatly appreciated.
Thanks
Vassil Petev
Telerik team
answered
on
27 Aug 2009
1 answer
147 views
Hi
Reading the post answer in MDI CHild Issue and Window State, indicates that there is an issue that was meant to be fixed with RadForms and the MenuStrip control in the latest Q2 2009 build.
I however have the latest production build (2009.2.9.729), and I am still having a problem with an MDI Child using a MenuStrip, and the behaviour of the child window bar. When maximising the child window, the bar does not disappear as it should, and does not repaint.
The MDI parent window is a RadRibbonForm.
Other MDI child windows that inherit from RadForm work fine (they don't have the MenuStrip on them), maximise correctly without the issue.
Please advise as to how to resolve this problem.
The project targets .NET 2.0 framework, development machine running on XP Pro SP3
Regards
Jayden MacRae
Reading the post answer in MDI CHild Issue and Window State, indicates that there is an issue that was meant to be fixed with RadForms and the MenuStrip control in the latest Q2 2009 build.
I however have the latest production build (2009.2.9.729), and I am still having a problem with an MDI Child using a MenuStrip, and the behaviour of the child window bar. When maximising the child window, the bar does not disappear as it should, and does not repaint.
The MDI parent window is a RadRibbonForm.
Other MDI child windows that inherit from RadForm work fine (they don't have the MenuStrip on them), maximise correctly without the issue.
Please advise as to how to resolve this problem.
The project targets .NET 2.0 framework, development machine running on XP Pro SP3
Regards
Jayden MacRae
Deyan
Telerik team
answered
on
27 Aug 2009
0 answers
169 views
hai! I have use below code for ascx control page navigation depending upon ascx page name using panel bar...I need breadcrumb for ascx page navigation..can anyone findout some samples...
public string TrackedUserControl
{
get { return ViewState["TrackedUserControl"] as string; }
set { ViewState["TrackedUserControl"] = value; }
}
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostingFromMenu() && IsPostBack)
ReloadContent();
}
protected void PanelNavigation_PanelNavigationItemClick(object sender, RadPanelBarEventArgs e)
{
LoadContent(e.Item.Value);
}
private void LoadContent(string menuItemName)
{
string ucUrl = menuItemName + ".ascx";
UserControl uc = null;
try
{
uc =
this.LoadControl(ucUrl) as UserControl;
if (uc != null)
{
ContentPlaceholder.Controls.Add(uc);
TrackedUserControl = ucUrl;
}
}
catch (Exception ex)
{
string msg = ex.Message;
}
}
private void ReloadContent()
{
UserControl uc = null;
try
{
uc =
this.LoadControl(TrackedUserControl) as UserControl;
}
catch
{
}
if (uc != null)
ContentPlaceholder.Controls.Add(uc);
}
private bool IsPostingFromMenu()
{
string ctlPostingBack = ScriptManager.GetCurrent(this).AsyncPostBackSourceElementID;
Control c = this.FindControl(ctlPostingBack);
if (c == null)
return false;
return (c.ID == "PanelNavigation");
}
thx
saroja
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asked
on
27 Aug 2009
2 answers
330 views
Hi!
I have a main form containing MDI forms.
When I load my MDI form (containing a multi column drop down control), I want the drop down control to have focus so I can start writing in it without first having to selected it.
(Im using a multi drop down control as a search input field)
Can this be done ?
Regards
Per
I have a main form containing MDI forms.
When I load my MDI form (containing a multi column drop down control), I want the drop down control to have focus so I can start writing in it without first having to selected it.
(Im using a multi drop down control as a search input field)
Can this be done ?
Regards
Per
Per
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Rank 1
Rank 1
answered
on
27 Aug 2009
