Questions on UI for WinForms Forum

3 answers

217 views

Short Falll chart

Hi

I have a requirement like shortfall kind of line graph.Kindly anyone give suggetion whether this is possible or not.I attached the screenshot for your reference.

Chart (obsolete as of Q1 2013)

answered on 11 Aug 2010

1 answer

111 views

from char/varchar to gridviewbooleancolumn

hi,

Recently I downloaded trial version of your products, I think those are good components makes developing stage easier. My question is. Database doesn't support boolean datatypes, so, I use char(1) to represent 'Y', 'N' values, but I need this be displayed by gridviewcheckboxcolumn, how can I do to make it possible since gridviewcheckboxcolumn must be binded to a boolean column into datatable and no way to translate string column datatable into boolean column datatable?

'Y' - On

'N' - Off

thanks

GridView

answered on 11 Aug 2010

1 answer

182 views

GridView ViewDefinition problem

Hi

In my project I have the following senario:

ColumnGroupsViewDefinition

view = new ColumnGroupsViewDefinition();

view.ColumnGroups.Add(new GridViewColumnGroup("Group"));

view.ColumnGroups.Add(new GridViewColumnGroup("ID"));

view.ColumnGroups.Add(new GridViewColumnGroup("Amount"));

view.ColumnGroups.Add(new GridViewColumnGroup("Date "));

view.ColumnGroups.Add(new GridViewColumnGroup("method"));

view.ColumnGroups.Add(new GridViewColumnGroup("request"));

view.ColumnGroups[3].Rows.Add(new GridViewColumnGroupRow());

view.ColumnGroups[4].Rows.Add(new GridViewColumnGroupRow());

view.ColumnGroups[5].Rows.Add(new GridViewColumnGroupRow());

view.ColumnGroups[3].Rows[0].Columns.Add(this.grid1.Columns["Now"]);

view.ColumnGroups[3].Rows[0].Columns.Add(this.grid1.Columns["yesterday"]);

view.ColumnGroups[4].Rows[0].Columns.Add(this.grid1.Columns["now"]);

view.ColumnGroups[4].Rows[0].Columns.Add(this.grid1.Columns["yesterday"]);

view.ColumnGroups[5].Rows[0].Columns.Add(this.grid1.Columns["now"]);

view.ColumnGroups[5].Rows[0].Columns.Add(this.grid1.Columns["yesterday"]);

DataTable

table = new DataTable();

table.Columns.Add(

"grp",typeof(string));

table.Columns.Add("ID",typeof(string));
table.Columns.Add("Amt",typeof(string));
table.Columns.Add("date",typeof(string));
table.Columns.Add("metd",typeof(string));
table.Columns.Add("req",typeof(string));

grid1.MasterGridViewTemplate.AutoGenerateColumns = false;

grid1.DataSource = table;

grid1.ViewDefinition = view;

My problem is that I get "Object reference not set to an instance of an object." error on last line that is:
"grid1.ViewDefinition = view;"

I have tryed many things to solve this but I couldn't.

Any help will be appreciated.

Thanks In advance.

GridView

answered on 11 Aug 2010

4 answers

203 views

Point diagram

Hi!

Could you write a short example with the chart control displaying a point series? My problem is that while I easily can se the point:s value labels in the chart I dont understand how to get the actual dots to be displayed.

I would apreciate a quick response.

Regards,
Oskar

Chart (obsolete as of Q1 2013)

answered on 11 Aug 2010

1 answer

185 views

No Themes in Dropdown

I upgraded to 2010.2.10.713 and the themes disapeared off of the dropdown lists for Grid View, as well as several other Telerik controls I use. FIrst pass, there where no themes selected in the Themes tab of the Upgrade/Configuration options. I reran both of them now with Vista selected as well as a view other random ones and there isn't anything in the drop down. The reference is in the project for the theme. Just typing in the name doesn't seem to do anything, no differences in appearance.

What happen, and how do I get it back?

Randy Miller

Themes and Visual Style Builder

answered on 10 Aug 2010

1 answer

137 views

[Solved] Issue with group header allignment

Hi,

I am using ColumnGroupsViewDefinition to bind to my grid , however i want to allign the group header as right allign but watever i try it doesnt work , i am able to allign the columns wihin the group but allignment of group header text is what i really need.

Please let me know whether this is possible or not.

Thanks
Pinaki

GridView

answered on 10 Aug 2010

2 answers

198 views

Performance issue with RadGridView in Q2

Hello,

I just updated my code and the refrenced dlls to use the Q2 2010 release of telerik controls.

I have a functionality incorporated which calculates values on a cell basis referring to other cells within the grid.
I am using the cellvaluechanged-event to submit the current position and the entered value to my calculation routine.

If grid.Rows(e.RowIndex).Cells(5).Value = "Adjusted Net Requirement (User Input)" Or grid.Rows(e.RowIndex).Cells(5).Value = "Supply Adj. Forecast (User Input)" Then

If IsNumeric(e.Value) Then

_supplyLogicLayer.calculateOnTheFly(dsSupply, grid, e.RowIndex, e.ColumnIndex, e.Value)

'_supplyLogicLayer.calculateOnTheFly(grid, e.RowIndex, e.ColumnIndex, e.Value)

End If

the caluclateonthefly procedure basically grabs values from specific cells and does the calculation with them.

Since I upgraded to the new release this procedure takes a tremendous amount of time - the Q1 release has been much faster in processing it that way. Addionaly after setting a new value to a certain cell (f.e. dr.Cells(ColumnIndex).Value = 1000) it isn't shown in the grid directly. I need to refresh it or expand and collapse a child to see the new value.

It is probably important to know that I am using a childgridrelation within the grid.

Let me know what you think.

Thanks

P.S.: We could do a netviewer remote session that you guys can see what is happening here.

GridView

answered on 10 Aug 2010

1 answer

153 views

gridview not updating

Hi, I bind the gridview in winforms to a generic list with a custom object.
The object implements the INotifyPropertyChanged interface and has the "OnPropertyChanged" event in the setter of almost all properties of said object.
Now the list is being run in a service to update the data and only when scrolling the gridview the gridview is being updated.
Is there a way to have this done automatically? Am I missing something?

Thanks

GridView

answered on 10 Aug 2010

1 answer

126 views

Bound ComboBoxColumn failing after LoadLayout

Hi.

I've encountered the following strange bevaviour in my GridViews.

Some GridViews in my application use bound ComboBox columns (NOT multi column).
Recently, I added functionality for saving/restoring the grid layout to/from files, using SaveLayout() and LoadLayout() functions of the grid.
Now, it seems, that after calling LoadLayout, my ComboBox columns are no long working properly. When I try to edit the content, I can see the DrowDown-Arrow button, but no content is displayed. The same code works perfectly when I leave out the LoadLayout() call.

I've debugged the code a bit, and it seems to me, that the combo box column "forgets" its data source (assigned during design time) upon calling LoadLayout(). If I re-assign the data source to the column in code after calling LoadLayout(), everything's fine again.

I can live with this workaround, but still wanted to ask if this is a known issue, or if I'm doing something wrong.

Thanks

GridView

answered on 10 Aug 2010

2 answers

246 views

[Solved] Custom Legend in Pie Chart

Hi,
The following is the code I use. I have attached the pie chart generated by this code.

ICollection<PieChartSeries> pieChartList = new List<PieChartSeries>();

GeneratePieChart generatePieChart = new GeneratePieChart();

pieChartList = generatePieChart.GenerateChartSeries();

radChart1.DataManager.DataSource = pieChartList;

radChart1.DataManager.LabelsColumn =

"ItemName";

radChart1.DataManager.ValuesXColumn =

"Value";

radChart1.IntelligentLabelsEnabled =

true;

radChart1.DataBind();

radChart1.Series[0].Name =

"LegendName";

radChart1.Series[0].Appearance.LegendDisplayMode =

ChartSeriesLegendDisplayMode.ItemLabels;

radChart1.Update();

The legends are not displaying the values of the LegendName property of the colloection pieChartList.
The LegendName property will have some names like Arvind, Robin, Kumar, Mark, etc...

Now the radChart is taking the legends as the radChart1.DataManager.LabelsColumnradChart1.DataManager.LabelsColumn's data (ItemName). Is it possible to display a different text for the legend (It should be other than the ItemName)?

In the above code I am using the line
radChart1.Series[0].Name = "LegendName";

Does it have any significance?

Regards,
Arvind Robin Kumar.

Chart (obsolete as of Q1 2013)

answered on 10 Aug 2010