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TextInput as EditTrigger not adding first character

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GridView

This is a migrated thread and some comments may be shown as answers.

17 Answers, 1 is accepted

Accepted

answered on 08 May 2013, 01:00 PM

I'm using WPF Q1 2013 SP1 (still in trial) and have this problem.

The GridView has EditTriggers="Default"

Here's my column definition.

<telerik:GridViewDataColumn DataMemberBinding="{Binding RequestedQty}"

Header="Req Qty"

Width="75" TextAlignment="Right"

HeaderTextAlignment="Right"

DataFormatString="n" >

<telerik:GridViewDataColumn.CellEditTemplate>

<DataTemplate>

<telerik:RadMaskedNumericInput

Value="{Binding RequestedQty, UpdateSourceTrigger=LostFocus}"

Mask="" FormatString="n"

HorizontalAlignment="Right"

HorizontalContentAlignment="Stretch"

InputBehavior="Replace"

SelectionOnFocus="SelectAll"

IsClearButtonVisible="False"

maskedInput:MaskedInputExtensions.Minimum="0" />

</DataTemplate>

</telerik:GridViewDataColumn.CellEditTemplate>

</telerik:GridViewDataColumn>

If a cell created using this column definition is focused but not in edit mode the first charachter entered puts it in edit mode as expected but that character is lost as stated by the OP.

Thanks,
Dave

answered on 12 Sep 2014, 03:07 PM

Hello Thio,

I tested the code snippet previously shared. The result I observed is the the first character is actually entered, it is that the entire value is selected. Therefore, the next input clears the selected value.

It is not reproducible in case I change the SelectionOnFocus setting. I understand this is the only option usable for you, however, once you select all the text and you enter a new one, the old text will be lost. This would be the expected behavior.

Regards,
Dimitrina
Telerik

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answered on 27 Mar 2015, 02:28 PM

Hello, Dimitrina.

I have the same problem with first character when I use UserControl as column editor with RadComboBox and RadDatePicker controls in it.
Here is the content of UserControl XAML:
<UserControl x:Class="Example1.SelectDateComboboxControl"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
             xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"
             mc:Ignorable="d"
             d:DesignWidth="300">

    <Grid>
        <Grid.ColumnDefinitions>
            <ColumnDefinition />
            <ColumnDefinition Width="25"/>
        </Grid.ColumnDefinitions>
        <telerik:RadComboBox x:Name="ComboBox" Grid.Column="0" Grid.ColumnSpan="2"
                                             IsTextSearchEnabled="True"
                                             IsEditable="True"
                                             TabIndex="0"
                                             TextSearchMode="StartsWith"
                                             SelectAllTextEvent="None"/>
        <telerik:RadDatePicker x:Name="Calendar" Grid.Column="1" DateSelectionMode="Day" Focusable="False" TabIndex="1"     IsTabStop="False"/>
    </Grid>
</UserControl>

I tried to set keyboard focus by calling Keyboard.Focus(ComboBox)in Loaded elent of this UserControl - no luck. ComboBox got focus but it is empty.
Here is column method for creating this UserControl editor:

        public override FrameworkElement CreateCellEditElement(GridViewCell cell, object dataItem)
        {
            var cellEditElement = new SelectDateComboboxControl();

            BindingTarget = SelectDateComboboxControl.ValueProperty;

            var valueBinding = CreateValueBinding();
            cellEditElement.SetBinding(this.BindingTarget, valueBinding);
            return cellEditElement;
        }

        protected virtual Binding CreateValueBinding()
        {
            var valueBinding = new Binding
                               {
                                   Mode = BindingMode.TwoWay,
                                   NotifyOnValidationError = true,
                                   ValidatesOnExceptions = true,
                                   UpdateSourceTrigger = UpdateSourceTrigger.Explicit,
                                   Converter = GetDisplayValueConverter(),
                                   ConverterParameter = ValueType,
                                   Path = new PropertyPath(DataMemberBinding.Path.Path)
                               };

            return valueBinding;
        }

Here is the part of UserControl:

    public partial class SelectDateComboboxControl : UserControl
    {
        public static readonly DependencyProperty ValueProperty = DependencyProperty.Register(
            "Value", typeof (string), typeof (SelectDateComboboxControl), new PropertyMetadata(default(string)));

        public string Value
        {
            get { return (string) GetValue(ValueProperty); }
            set
            {
                SetValue(ValueProperty, value);
                ComboBox.Text = value;
            }
        }
       ...

How RadGridView determine to what control in column editor to pass entered character?

answered on 30 Mar 2015, 12:49 PM

Hi Anatoly,

As it turns out when you have redefined the CellEditTemplate of GridViewDataColumn, then the text input over the cell prior going into edit mode will not be directly propagated to the RadComboBox element you defined as an editing element.

You can try the following work around:

private void pilotsGrid_PreparingCellForEdit(object sender, GridViewPreparingCellForEditEventArgs e)

{

TextCompositionEventArgs textCompositionEventArgs = e.EditingEventArgs as TextCompositionEventArgs;

if (textCompositionEventArgs != null)

{

RadComboBox comboBox = e.EditingElement as RadComboBox;

if (comboBox != null)

{

comboBox.Text = textCompositionEventArgs.Text;

}

Let me know how it works for you.

Regards,
Dimitrina
Telerik

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