Questions on UI for WPF Forum

1 answer

132 views

GridViewImageColumn does not show my bitmap

Given this XAML

<grid:GridViewImageColumn DataMemberBinding="{Binding ProtocolTypeBitmap}" Header="Type" UniqueName="Type"/>

Why does my bitmaps never appear? The column is ALLWAYS just white. No error, no nothing. I've checked a million times that the property 'ProtocolTypeBitmap' on the bound to object is valid. It IS a bitmap, it HAS data in it, but never show up. All other properties
(mostly text) that are bound to are showing up fine. The same INSTANCE of this object is used in another part of the app where the bitmap is shown using other techs. So something is going wrong with GridViewImageColumn.

Any ideas?

GridView

answered on 26 Feb 2010

2 answers

92 views

[Solved] Drag item off the itemscontrol just to remove it

Hello, i'm willing to know if there is any way to get some kind of event from DNDmanager or a status that could say "Item is in dropinpossible state but mouse released" so if this case happens i remove item from itemscontrol. I need this because user could easily drag in items he wants, and to remove items - use drag off, not some kind of context menu.

General Discussions

answered on 25 Feb 2010

15 answers

226 views

Inner Grid Flashing on NotifyPropertyChanged of Parent

Hi,

We're using the inner grid feature of the GridView control quite heavily and have encoutered an odd problem:

Whenever the parent row's viewmodel fires a NotifyPropertyChanged event, the inner grid is completely redrawn. Since the inner grid's columns use fill width the whole inner grid flashes. Oddly enough, the parent row appear okay.

Any idea why this is happening and how to avoid it?

                    <telerik:RadGridView          
                        RowIndicatorVisibility="Hidden"         
                        AutoGenerateColumns="False"         
                        ShowGroupPanel="False"          
                        RowDetailsVisibilityMode="VisibleWhenSelected"         
                        Name="MainGrid"         
                        ItemsSource="{Binding Alerts}"         
                        ShowColumnHeaders="True"         
                        >         
                        <telerik:RadGridView.Columns>         
                            <telerik:GridViewDataColumn Name="Headline" EditTriggers="None"         
                                                        DataMemberBinding="{Binding Headline,Mode=OneWay}" />         
                        </telerik:RadGridView.Columns>         
                        <telerik:RadGridView.ChildTableDefinitions>         
                            <telerik:GridViewTableDefinition          
                                AutoGenerateFieldDescriptors="False"         
                                >         
                                <telerik:GridViewTableDefinition.Relation>         
                                    <telerik:PropertyRelation          
                                        ParentPropertyName="DescriptionLines" />         
                                </telerik:GridViewTableDefinition.Relation>         
                            </telerik:GridViewTableDefinition>         
                        </telerik:RadGridView.ChildTableDefinitions>         
                        <telerik:RadGridView.HierarchyChildTemplate>         
                            <DataTemplate>         
                                <Grid>         
                                    <telerik:RadGridView          
                                        RowIndicatorVisibility="Hidden"         
                                        AutoGenerateColumns="False"         
                                        ShowGroupPanel="False"          
                                        RowDetailsVisibilityMode="Collapsed"         
                                        ShowColumnHeaders="True"         
                                        ItemsSource="{Binding DescriptionLines}"         
                                        ScrollViewer.HorizontalScrollBarVisibility="Hidden"         
                                        RowLoaded="ChildGridView_RowLoaded"         
                                        ColumnsWidthMode="Fill"         
                                        Margin="10,10,10,10"         
                                        >         
                                        <telerik:RadGridView.Columns>         
                                            <telerik:GridViewDataColumn          
                                                Header="Device Name"         
                                                MaxWidth="300"         
                                                EditTriggers="None"         
                                                >         
                                                <telerik:GridViewDataColumn.CellTemplate>         
                                                    <DataTemplate>         
                                                        <ContentPresenter Content="{Binding AssociatedViewModel}" />         
                                                    </DataTemplate>         
                                                </telerik:GridViewDataColumn.CellTemplate>         
                                            </telerik:GridViewDataColumn>         
                                            <telerik:GridViewDataColumn          
                                                Header="Description"         
                                                DataMemberBinding="{Binding Description}"          
                                                TextWrapping="Wrap"         
                                                EditTriggers="None"         
                                                />         
                                            <telerik:GridViewDataColumn          
                                                Header=""         
                                                MaxWidth="100"         
                                                EditTriggers="None"         
                                                >         
                                                <telerik:GridViewDataColumn.CellTemplate>         
                                                    <DataTemplate>         
                      
                                                        <!-- This contains a RadDropDownButton, I've cut it out now -->          
                                                    </DataTemplate>         
                                                </telerik:GridViewDataColumn.CellTemplate>         
                                            </telerik:GridViewDataColumn>         
                                        </telerik:RadGridView.Columns>         
                                    </telerik:RadGridView>         
                                </Grid>         
                            </DataTemplate>         
                        </telerik:RadGridView.HierarchyChildTemplate>         
                     
                    </telerik:RadGridView>         

Thanks,

yonadav

GridView

answered on 25 Feb 2010

2 answers

830 views

How to bind text property to TextBlock inside RowDetailTemplate

Hello,

To simplify my question, I have project with one RadGridView and 2 text boxes. textBox2 is binded to textBox1 and TextBlock inside RowDetailsTemplate is also binded to that same textBox1 exactly same way. Binding to inside RowDetailsTemplate does not work, binding from textBox1 to textBox2 works ok.
Can you please point me what I do wrong?

XAML is:

    
            <Window x:Class="WpfApplication11.Window1" 
        
                xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
        
                xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
        
                Title="Window1" Height="371" Width="747" xmlns:my="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls.GridView">  
        
                <Grid> 
        
                    <Grid.RowDefinitions> 
        
                        <RowDefinition></RowDefinition>  
        
                        <RowDefinition Height="Auto" MinHeight="19"></RowDefinition> 
        
                    </Grid.RowDefinitions> 
        
                    <my:RadGridView Grid.Row="0" Name="radGridView1" RowDetailsVisibilityMode="VisibleWhenSelected">  
        
                        <my:RadGridView.RowDetailsTemplate> 
        
                            <DataTemplate> 
        
                                <StackPanel Orientation="Horizontal" Margin="10,10,10,10">  
        
                                    <TextBlock Text="Detail from textBox1 is : " /> 
        
                                    <TextBlock Text="{Binding ElementName=textBox1, Path=Text}" /> 
        
                                </StackPanel> 
        
                            </DataTemplate> 
        
                        </my:RadGridView.RowDetailsTemplate> 
        
                    </my:RadGridView> 
        
                    <StackPanel Grid.Row="1" Orientation="Horizontal">  
        
                        <TextBox Width="100" Name="textBox1"></TextBox> 
        
                        <TextBox Width="100" Text="{Binding ElementName=textBox1, Path=Text}" Name="textBox2"></TextBox>      
        
                    </StackPanel> 
        
                </Grid> 
        
            </Window>

and the code behind is:

    
            using System;  
        
            using System.Collections.Generic;  
        
            using System.Linq;  
        
            using System.Text;  
        
            using System.Windows;  
        
            using System.Windows.Controls;  
        
            using System.Windows.Data;  
        
            using System.Windows.Documents;  
        
            using System.Windows.Input;  
        
            using System.Windows.Media;  
        
            using System.Windows.Media.Imaging;  
        
            using System.Windows.Navigation;  
        
            using System.Windows.Shapes;  
        
            using System.Data;  
        
            namespace WpfApplication11  
        
            {  
        
                /// <summary> 
        
                /// Interaction logic for Window1.xaml  
        
                /// </summary> 
        
                public partial class Window1 : Window  
        
                {  
        
                    public Window1()  
        
                    {  
        
                        InitializeComponent();  
        
                        DataToGrid1();  
        
                    }  
        
                    private void DataToGrid1()  
        
                    {  
        
                        DataTable myDataTable = new DataTable();  
        
                        myDataTable.Columns.Add("Id", typeof(int));  
        
                        myDataTable.Columns.Add("Model", typeof(string));  
        
                        myDataTable.Columns.Add("Color", typeof(string));  
        
                        myDataTable.Columns.Add("Prize", typeof(double));  
        
                        for (int i = 0; i < 6; i++)  
        
                        {  
        
                            myDataTable.Rows.Add(i, "BMW", "Blue", 5700);  
        
                        }  
        
                        myDataTable.AcceptChanges();  
        
                        radGridView1.ItemsSource = myDataTable;    
        
                    }  
        
                }  
        
            }

GridView

answered on 25 Feb 2010

1 answer

84 views

Change Tab on drag over of an item from RAD Tree.

Hi,
I am using RAD tree and Tab control from telerik in my application.
This might have been asked on here before - but I couldn't find it through the searches.
In my application I have 2 tabs - first tab containing list of objects. I want to be able to grab a selected object from the first tab, and drag it over second tab that I want to drop it into. So when I have it over the desired tab, the tab selection will change to that.

Is this possible? Would anyone care to share any ideas as to how to do it?

Thanks,
Balaram

TreeView

answered on 25 Feb 2010

1 answer

242 views

RadGridView Groups: XAML GroupDescriptors break end user grouping?

Greetings All,

Ran into a problem with creating groups via XAML GroupDescriptors. I would like to set some basic groups to start with when the grid loads, and still allow the user to add new grouping using the "drag and drop into the group panel" interface. For example, load the grid grouped by county, then allow the user to choose if they would like to further group by state, city, whatever.

My problem is, when I attempt to add another group via the interface, the grouping works but each new group only has one child row even if many are available. If I then click the row header of the new grouped column, the data in the one visible row changes. So... the other rows are there somewhere, I can just see one at a time. Very odd.

If I attempt the same thing using only drag and drop with no predefined GroupDescriptors it works wonderfully.

Am I missing something, or have I run into a limitation of Grouping in the RadGridView?

Thanks for any help!

GridView

answered on 25 Feb 2010

1 answer

158 views

[Solved] slider Template issue

Hi

i need to create make my slider dynamic. so i need to change my maximum value for each 5 mins, so am trying to bind my maximum and minimum value(DateTime) from database. here am facing problem,that i cannot bind the values in minimum,maximum and in the textblock, i cant even call the biniding function here, please tel me how to call and bind my values to the slider

<

telerik:RadSlider Minimum="{Binding {StaticResource MinValue}}" Maximum="{Binding {StaticResource MaxValue}}" TickFrequency="1" TickPlacement="BottomRight" IsSnapToTickEnabled="True" Margin="133,175,114,204">

<telerik:RadSlider.TickTemplate>

</StackPanel>

</DataTemplate>

</telerik:RadSlider.TickTemplate>

</telerik:RadSlider>

Slider

answered on 25 Feb 2010

0 answers

95 views

checkboxeditor

Hi,

we are using telerik checkboxeditor in our project.
we are adding some text to checkboxeditor.
The background color of Checkboxeditor we are getting is orange.
When we change the back ground color of check box . Only the border of checkbox is getting changed.
I want to change the back ground of text as well which is given to check box.....
Please reply me with a solution to solve this problem

General Discussions

asked on 25 Feb 2010

4 answers

109 views

Potential Issue with Gridview

I have a hierachical grid view that binds to a datasource with autogenerate columns set to true.

I have a timer on my screen that the user can switch on and off to 'auto refresh' the grid

I have noticed that when i next cycle trhough and fetch data and bind, the data in the child tables doesnt get cleared

for example i have 4 rows in my table, each with 2 rows underneath .. next time i refresh i still have 4 rows but they each have 4 underneath

I can clear this by clearing them all before i rebind .. by i thought that binding would sort this out without having to clear them

is the working as it should?

General Discussions

answered on 25 Feb 2010

1 answer

106 views

Sorting the dynamic grids

Hi,

I had a reqirement that i need to generate the dynamic grids in my window and on the button click i need to sort the grids.
i'm able to generate the dynamic grids and i took the array list in which im adding the grid name but now in the button click how can i sort the grids?

can anyone please help me on this issue please.

GridView

answered on 25 Feb 2010