Questions on UI for WPF Forum

1 answer

286 views

GridViewComboBoxColumn dynamic data binding for each row

Hi

i am wpf programmer and use telerik grid view for showing database table.

i have a GridViewComboBoxColumn in my grid and the combobox items for each row is different.

how can i bind data for each row combo in run time?

GridView

answered on 13 Nov 2015

1 answer

269 views

how to get row value from database?

I want to get row value after i click a cell. I try using SelectionChanged and follow so many Q&A in many forum and still can't do this. maybe if you guys can give me an example for this, maybe after click a cell it will give message about every value in that row?

here is my whole code, i hope telerik team can help me.

XAML

<Grid>

<StackPanel x:Name="xPanel">

<telerik:RadGridView x:Name="dataGrid"

AutoGenerateColumns="False"

ColumnWidth="*"

ShowGroupPanel ="False"

CanUserReorderColumns ="False"

ItemsSource="{Binding}"

SelectionChanged="dataGrid_SelectionChanged">

<telerik:RadGridView.Columns>

<telerik:GridViewDataColumn Header="idx"

DataMemberBinding="{Binding idx}" />

<telerik:GridViewDataColumn Header="tag"

DataMemberBinding="{Binding tag}" />

<telerik:GridViewDataColumn Header="value"

DataMemberBinding="{Binding value}" />

</telerik:RadGridView.Columns>

</telerik:RadGridView>

<telerik:RadButton Content="Update" Height="30" Click="RadButton_Click" />

</StackPanel>

</Grid>

CS

namespace Setting

{

public partial class MainWindow : Window

{

ScimoreDataAdapter dataAdp;

DataSet ds;

public MainWindow()

{

InitializeComponent();

string dbInstanceName = "C:\\Users\\Abc\\Documents\\Visual Studio 2010\\Projects\\Setting\\Setting\\configdb";

ScimoreEmbedded em = new ScimoreEmbedded();

em.Open(dbInstanceName);

try

{

using (ScimoreConnection cn = em.CreateConnection())

{

cn.Open();

string query = "select idx,tag,value from config.info";

dataAdp = new ScimoreDataAdapter(query, cn);

DataTable dataTable = new DataTable("info");

ds = new System.Data.DataSet();

dataAdp.Fill(ds, "info");

dataGrid.ItemsSource = ds.Tables[0];

dataAdp.Update(ds, "info");

}

catch (Exception)

{

}

private void RadButton_Click(object sender, RoutedEventArgs e)

{

}

private void dataGrid_SelectionChanged(object sender, SelectionChangeEventArgs e)

{

//System.Data.DataRowView CurrentSelected = ((System.Data.DataRowView)dataGrid.SelectedItem);

//MessageBox.Show(Convert.ToString(CurrentSelected.Row.ItemArray[1]));

}

GridView

answered on 13 Nov 2015

9 answers

197 views

Pdf viewer crashes before image from scanned PDF is rendered

I am loading a scanned PDF in the PDFViewer and if I navigate away from the page that is loading the pdf before the image of the pdf is finished rendering it causes the following exception: "The given key was not present in the dictionary"

I believe the exception comes from ImageLoader_WorkCompleted method from the Telerik.Windows.Documents.Fixed dll.

PDFViewer

answered on 13 Nov 2015

0 answers

111 views

How to create TabControl Having Close Image Button

Hello,

I have downloaded and install a very beautiful Telerik winform application. I found a very nice tab control (We say probably radpageview to it in winforms) with a little close image aligned at right side. I am really impressed and want to create it in wpf. Telerik TabControl doesnot fullfill this behavior by default. I actually need to implement it dynamically when a user click on button. For example when a user click on button a tab control should be created dynamically as you can see in attached image.

I want to achieve this by using mvvm/xaml pattern using as much as simple example code. If you please send a sample project with complete code implementation i will be really glad and thankful.

TabControl

asked on 12 Nov 2015

0 answers

126 views

How to create TabControl Having Close Image Button

Hello,

I have downloaded and install a very beautiful telerik winform application. I found a very nice tab control (We say probably radpageview to it in winforms) with a little close image aligned at right side. I am really impressed and want to create it in wpf. Telerik TabControl doesnot fullfill this behavior by default. I actually need to implement it dynamically when a user click on button. For example when a user click on button a tab control should be created dynamically as you can see in attached image.

I want to achieve this by using mvvm/xaml pattern using as much as simple example code. If you please send a sample project with complete code implementation i will be really glad and thankful.

Window

asked on 12 Nov 2015

1 answer

113 views

you are using unsupported command line flag --disable web security error

Hi,

I'm seeing this "you are using unsupported command line flag --disable web security" error message in Chrome (Version 46.0.2490.86 m), which appears to be coming from Telerick's Test Studio plugins, as I don't see them when those are disabled.

Is there a way to get rid of that error message?

Thanks,

Arcady

General Discussions

answered on 12 Nov 2015

3 answers

398 views

Barcode Reader

I've been playing with your Barcode Reader and assume I am doing something wrong or missing something.

First, is there a way to "push the Open button" from the library? When I produce a barcode image, I'd like to just have it read that when I ask in code... not from the button.

Secondly and more important, I can't get a good read. I have created a demo app that I'd be happy to share. I print a 128 barcode to PNG file. Then, I attempt to read the value back using the reader and it never returns the value I entered into the barcode.

Output Barcode to PNG File:

SaveFileDialog dialog = new SaveFileDialog()

{

DefaultExt = "png",

Filter = "png (*.png)|*.png"

};

if (dialog.ShowDialog() == true)

{

using (Stream stream = dialog.OpenFile())

{

Telerik.Windows.Media.Imaging.ExportExtensions.ExportToImage(

barCode,

stream,

new PngBitmapEncoder());

}

Let me know if you want me to upload my demo app.
Joel

BarCode

answered on 12 Nov 2015

2 answers

162 views

Incorrect editors when switching PropertySetMode

I'm experiencing some odd behavior when changing the PropertySetMode at runtime.

I have two object types: MyTestClass1 and MyTestClass2. MyTestClass1 has a writeable property IntProp and MyTestClass2 has a readonly property IntProp. If I start in Intersection mode with Item = List<Object> { myTestClass1Obj1, myTestClass1Obj2 } everything works properly. If I then change to PropertySetMode None with Item = myTestClass2Obj, the editor for IntProp will be writeable even though IntProp on myTestClass2Obj has no public setter.

See runnable test case below. I am running 2015.2.728

<Window x:Class="WpfApplication1.MainWindow"

xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"

Title="MainWindow" Height="350" Width="525">

<Grid>

<StackPanel Orientation="Vertical">

<Button Click="ButtonBase_OnClick">Change to mode none</Button>

<telerik:RadPropertyGrid x:Name="rpg"/>

</StackPanel>

</Grid>

</Window>

using System;

using System.Collections.Generic;

using System.Windows;

using System.Windows.Controls;

using System.Windows.Data;

using System.ComponentModel;

using System.Collections.ObjectModel;

using System.Text.RegularExpressions;

using System.ComponentModel.DataAnnotations;

using Telerik.Windows.Controls.Data.PropertyGrid;

namespace WpfApplication1

{

/// <summary>

/// Interaction logic for MainWindow.xaml

/// </summary>

public partial class MainWindow : Window

{

private readonly MyTestClass test;

private readonly MyTestClass test2;

private readonly MyTestClass2 test3;

public MainWindow()

{

InitializeComponent();

rpg.AutoGeneratingPropertyDefinition += new

EventHandler<Telerik.Windows.Controls.Data.PropertyGrid.AutoGeneratingPropertyDefinitionEventArgs>(rpg_AutoGeneratingPropertyDefinition);

// test data. IntProp is has a public setter

test = new MyTestClass() { StringProp = "91das", RequiredField = "abc", IntProp = 10, DateTimeProp = new DateTime(1920, 2, 21) };

test2 = new MyTestClass() { StringProp = "91das", RequiredField = "abc", IntProp = 10, DateTimeProp = new DateTime(1920, 2, 21) };

// test data. IntProp is read only (no public setter)

test3 = new MyTestClass2() { StringProp = "91das", RequiredField = "abc", DateTimeProp = new DateTime(1920, 2, 21) };

rpg.Item = new List<Object> {test, test2};

rpg.PropertySetMode = PropertySetOperation.Intersection;

}

void rpg_AutoGeneratingPropertyDefinition(object sender, Telerik.Windows.Controls.Data.PropertyGrid.AutoGeneratingPropertyDefinitionEventArgs e)

{

(e.PropertyDefinition.Binding as Binding).ValidatesOnDataErrors = true;

(e.PropertyDefinition.Binding as Binding).NotifyOnValidationError = true;

(e.PropertyDefinition.Binding as Binding).ValidatesOnExceptions = true;

}

private ObservableCollection<ValidationError> results;

public ObservableCollection<ValidationError> Results

{

get

{

if (this.results == null)

{

this.results = new ObservableCollection<ValidationError>();

}

return results;

}

private void ButtonBase_OnClick(object sender, RoutedEventArgs e)

{

rpg.PropertySetMode = PropertySetOperation.None;

rpg.Item = test3;

// the property grid will now allow setting of test3.IntProp even though there is

// no public setter

}

public class MyTestClass : IDataErrorInfo, INotifyPropertyChanged

{

private int intVar;

private string requiredField;

public int IntProp

{

get { return intVar; }

set

{

intVar = value;

this.OnPropertyChanged("IntProp");

}

[Required(ErrorMessage = "This field is Required.")]

public string RequiredField

{

get { return requiredField; }

set

{

requiredField = value;

ValidateProperty("RequiredField", value);

this.OnPropertyChanged("RequiredField");

}

private string stringVar;

public string StringProp

{

get { return stringVar; }

set

{

stringVar = value;

this.OnPropertyChanged("StringProp");

}

private DateTime dateTimeVar;

public DateTime DateTimeProp

{

get { return dateTimeVar; }

set

{

dateTimeVar = value;

this.OnPropertyChanged("DateTimeProp");

}

[Browsable(false)]

public string Error

{

get { return string.Empty; }

}

public string this[string columnName]

{

get

{

if (columnName == "IntProp")

{

return this.IntProp < 100 && this.IntProp > 0 ? string.Empty : "Value should be in the range of (0, 100)";

}

if (columnName == "StringProp")

{

return this.StringProp != null && Regex.IsMatch(this.StringProp, @"^[0-9]+[\p{L}]*") ? string.Empty : @"Value should math the regex: ^[0-9]+[\p{L}]*";

}

if (columnName == "DateTimeProp")

{

return this.DateTimeProp.Year > 1900 ? string.Empty : "Date should be after 1/1/1900";

}

return string.Empty;

}

protected void OnPropertyChanged(string name)

{

if (this.PropertyChanged != null)

{

this.PropertyChanged(this, new PropertyChangedEventArgs(name));

}

public event PropertyChangedEventHandler PropertyChanged;

public void ValidateProperty(string propName, object value)

{

var result = new List<System.ComponentModel.DataAnnotations.ValidationResult>();

Validator.TryValidateProperty(value, new ValidationContext(this, null, null) { MemberName = propName }, result);

if (result.Count > 0)

{

throw new ValidationException(result[0].ErrorMessage);

}

public class MyTestClass2 : IDataErrorInfo, INotifyPropertyChanged

{

private int intVar;

private string requiredField;

public int IntProp { get; } = 12;

[Required(ErrorMessage = "This field is Required.")]

public string RequiredField

{

get { return requiredField; }

set

{

requiredField = value;

ValidateProperty("RequiredField", value);

this.OnPropertyChanged("RequiredField");

}

private string stringVar;

public string StringProp

{

get { return stringVar; }

set

{

stringVar = value;

this.OnPropertyChanged("StringProp");

}

private DateTime dateTimeVar;

public DateTime DateTimeProp

{

get { return dateTimeVar; }

set

{

dateTimeVar = value;

this.OnPropertyChanged("DateTimeProp");

}

[Browsable(false)]

public string Error

{

get { return string.Empty; }

}

public string this[string columnName]

{

get

{

if (columnName == "IntProp")

{

return this.IntProp < 100 && this.IntProp > 0 ? string.Empty : "Value should be in the range of (0, 100)";

}

if (columnName == "StringProp")

{

return this.StringProp != null && Regex.IsMatch(this.StringProp, @"^[0-9]+[\p{L}]*") ? string.Empty : @"Value should math the regex: ^[0-9]+[\p{L}]*";

}

if (columnName == "DateTimeProp")

{

return this.DateTimeProp.Year > 1900 ? string.Empty : "Date should be after 1/1/1900";

}

return string.Empty;

}

protected void OnPropertyChanged(string name)

{

if (this.PropertyChanged != null)

{

this.PropertyChanged(this, new PropertyChangedEventArgs(name));

}

public event PropertyChangedEventHandler PropertyChanged;

public void ValidateProperty(string propName, object value)

{

var result = new List<System.ComponentModel.DataAnnotations.ValidationResult>();

Validator.TryValidateProperty(value, new ValidationContext(this, null, null) { MemberName = propName }, result);

if (result.Count > 0)

{

throw new ValidationException(result[0].ErrorMessage);

}

dafadsf

PropertyGrid

answered on 12 Nov 2015

4 answers

237 views

Binding errors on item changing

With xaml
<Grid>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="321*" />
            <ColumnDefinition Width="335*" />
        </Grid.ColumnDefinitions>
        <StackPanel>
            <Button Margin="5" GotFocus="GotFocus">Test</Button>
            <TextBox Margin="5" GotFocus="GotFocus">text</TextBox>
        </StackPanel>
        <telerik:RadPropertyGrid x:Name="pg" Grid.Column="1"
                                 LabelColumnWidth="100" IsGrouped="True" AutoGeneratePropertyDefinitions="True"
                                 telerik:StyleManager.Theme="Vista"/>
    </Grid>
and code

        private void GotFocus(object sender, RoutedEventArgs e)
        {
            pg.Item = sender;
        }
if you switch between controls than you see errors like this
System.Windows.Data Error: 40 : BindingExpression path error: 'ClickMode' property not found on 'object' ''TextBox' (Name='')'. BindingExpression:Path=ClickMode; DataItem='TextBox' (Name=''); target element is 'RadComboBox' (Name=''); target property is 'SelectedValue' (type 'Object')
System.Windows.Data Error: 40 : BindingExpression path error: 'Command' property not found on 'object' ''TextBox' (Name='')'. BindingExpression:Path=Command; DataItem='TextBox' (Name=''); target element is 'TextBox' (Name=''); target property is 'Text' (type 'String')
System.Windows.Data Error: 40 : BindingExpression path error: 'CommandParameter' property not found on 'object' ''TextBox' (Name='')'. BindingExpression:Path=CommandParameter; DataItem='TextBox' (Name=''); target element is 'TextBox' (Name=''); target property is 'Text' (type 'String')
System.Windows.Data Error: 40 : BindingExpression path error: 'CommandTarget' property not found on 'object' ''TextBox' (Name='')'. BindingExpression:Path=CommandTarget; DataItem='TextBox' (Name=''); target element is 'TextBox' (Name=''); target property is 'Text' (type 'String')
Because the propertygrid do not clear bindings after change selected item.
The version is 2011.3.1330.40 Dev

PropertyGrid

answered on 12 Nov 2015

4 answers

130 views

[Solved] Constraining scope of context menu

When I right-click outside the area containing the slots,for example, on the header, the context menu that I have defined still appears provided that I have a selected slot or appointment. Is it possible to constrain the context menu to the slot area?

ScheduleView

answered on 12 Nov 2015