Questions on UI for WPF Forum

6 answers

205 views

Using a RadComboBox on a UserControl; compiled on Win7 x64 using VS2010 and executed on a WinXP. When the drop down on the combo box is activated the contents is behind the dialog box.

This is limited to a UserControl opened in a RadWindow

RadWindow host = new RadWindow();
host.Content = (new UserControl1());

If the UserControl1 contains a ComboBox then the dropdown appears behind the UserControl1 window.

ComboBox

answered on 15 Jul 2011

1 answer

191 views

Column filtering with .NET's DynamicObject

Greetings,

I've taken an interesting approach to binding in the RadGridView in order to meet some business requirements. Specifically, I'm extending my bound object from System.Dynamic.DynamicObject in order to dynamically "add" properties to the object at run time based on user selection. Here's a simplified version of my bound object:

public class GridItem : DynamicObject, INotifyPropertyChanged

{

public GridItem(DateTime dateTime, decimal value)

{

_dateTime = dateTime;

_value = value;

}

//NOTE: The DateTime property is private forcing the GridView to use the DynamicObject implementation...

private readonly DateTime _dateTime;

private DateTime DateTime

{

get { return _dateTime; }

}

//NOTE: The Value property is private forcing the GridView to use the DynamicObject implementation...

private decimal _value;

private decimal Value

{

get { return _value; }

set

{

_value = value;

OnPropertyChanged("Value");

}

public override bool TryGetMember(GetMemberBinder binder, out object result)

{

result = null;

switch (binder.Name)

{

case "DateTime":

result = DateTime;

break;

case "Value":

result = Value;

break;

}

return true;

}

public override bool TrySetMember(SetMemberBinder binder, object value)

{

switch (binder.Name)

{

case "Value":

decimal result;

if(decimal.TryParse(value.ToString(), out result))

{

Value = result;

}

break;

}

return true;

}

private static readonly IEnumerable<string> _members =

new List<string>() { "DateTime", "Value" };

public override IEnumerable<string> GetDynamicMemberNames()

{

return _members;

}

public event PropertyChangedEventHandler PropertyChanged;

private void OnPropertyChanged(string propertyName)

{

if (PropertyChanged == null)

return;

PropertyChanged(this, new PropertyChangedEventArgs(propertyName));

}

I add the items to my GridView using:

this.GridView.ItemsSource =

new List<GridItem>()

{

new GridItem(DateTime.Parse("1/1/2009"), 10.9m),

new GridItem(DateTime.Parse("3/31/2010"), 11.4m),

new GridItem(DateTime.Parse("5/1/2011"), 12.5m),

};

And my Grid is defined as such:

<Telerik:RadGridView x:Name="GridView" AutoGenerateColumns="False">

<Telerik:RadGridView.Columns>

<Telerik:GridViewDataColumn UniqueName="DateTime" Header="Date/Time"

DataMemberBinding="{Binding DateTime}" IsReadOnly="True"

DataType="{x:Type System:DateTime}" IsFilterable="True" />

<Telerik:GridViewDataColumn UniqueName="Value" Header="Value"

DataMemberBinding="{Binding Value}" DataType="{x:Type System:Decimal}"

IsFilterable="True" />

</Telerik:RadGridView.Columns>

</Telerik:RadGridView>

The approach works great for binding; however, the column filtering does not work. It seems to be broken when there's not a public property exposed.

I'm using the Q3/2010 Telerik controls.

Any help or work around would be appreciated. We must have column filtering.

Thanks a bunch.

GridView

answered on 15 Jul 2011

1 answer

229 views

How to change default Filter drop down value to specific e.g "Contains"

Hi
In gridview filter option you can see drop down always start with "Is Equal To" is it possible to change to "Contains", i do not want to do any custom filters as i like inbuilt filters and just want to change filter drop down option to selected " Contains " option only, so if i want to filter something in column i just enter value and press "Filter" button and filter will filter value based on "Contains" option.

Kind Regards:

GridView

answered on 15 Jul 2011

3 answers

142 views

GridViewComboBoxColumn: howto check ItemsSource Property

Hi there,
I have a GridViewComboBoxColumn in a nested hierarchical GridView, but somehow I can't set ItemsSource, DataMemberBinding and SelectedValueMemberPath properly from XAML. So, is there a simple way to find out, which ItemsSource is really set in the nested Grid at runtime, in order to fix the other props?
btw, my error looks like

BindingExpression path error: 'Name' property not found on 'object' ''Char' (HashCode=5177423)'. BindingExpression:Path=Name; DataItem='Char'

Cheers,
Hermann

GridView

answered on 15 Jul 2011

5 answers

274 views

What should be the width for column of RadGridView ?

I am using wpf 4.0 and telerik (3rd party tool) in my application and in which using grid of telerik.Now in my application there is a requirement that if the screen resolution gets bigger than 1024*768 then the columns width should increase.So i gave column width as star (*).

But in case of more than 20 columns in one grid................all the columns get collapsed with each other and though I have done the ScrollBar visibility as auto...............I dont see the scroll bar.So kindly tell me what should be the correct way to define width for the column.

GridView

answered on 15 Jul 2011

2 answers

72 views

Data Binding Problem

I want to binding SumFunction with a textblock. But I don`t how to do it. Here is my XMAL Code:

telerik:GridViewDataColumn Header="Amount" UniqueName="Amount" DataMemberBinding="{Binding Amount}">
<telerik:GridViewDataColumn.AggregateFunctions>
<telerik:SumFunction x:Name="MyTotal" Caption="Sum:" SourceField="Amount" />
</telerik:GridViewDataColumn.AggregateFunctions>
</telerik:GridViewDataColumn>

<TextBlock Height="23" HorizontalAlignment="Right" Margin="0,28,98.377,0" x:Name="textBlock1" Text="{Binding "Need something to do", ElementName=radGridView1}" VerticalAlignment="Top" TextInput="textBlock1_TextInput" Width="79" d:LayoutOverrides="VerticalAlignment" />

thank`s for Help

GridView

answered on 14 Jul 2011

13 answers

323 views

RadTreeListView.ScrollIntoView doesn't works

Hi,

I faced with a problem that RadTreeListView.ScrollIntoView() doesn't works at all.

I need your support or workaround if so exist asap.

Thank you in advance,
Julian

TreeListView

answered on 14 Jul 2011

1 answer

197 views

RadTreeView with IsTriStateMode

Hi, I'm using the RadTreeView, binding it t to a list of objects, which have a IsChecked property and binding it using the item container style.

But i trying to get this approach:
- If I choose children, the parent is marked using the IsTriStateMode in true) and the event Checked/Unchecked is fired
- If check the parent root, the children won't be marked and the event Checked isn't fired.

Any ideas of how to do this approach?
thank you

TreeView

answered on 14 Jul 2011

15 answers

301 views

Breadcrumb for WPF

Is there any timeframe on a port of the RadBreadCrumb control to WPF?

General Discussions

answered on 14 Jul 2011

1 answer

380 views

DateTimePicker shows min value in calender

Hi,
DateTimePicker shows a min value as 1/1/0001 in calender.How to default it to as todays date.
In other case, if i am not selecting any date from datepicker, datetime property holds the mindate value.How to make this as empty string.
I am using MVVM pattern,

DatePicker

answered on 14 Jul 2011