[Solved] Limit dates

[Keith Stephens]

Hello all,
I have been working on this for a few days now with no evail.

I have a gridveiw that has 2 fields on it "begin" and "end". These fields are date types so when in edit mode the date picker is displayed.
I need to be able to limit the dates that the user can select in the date picker.
In the "begin" fields I need the user to be able to select date upto 30 days past and in the "end" field they can only select upto 90 in the future.

I don't know how to get to the date control, it is automatic?
Here is how my column is set up.

<telerikGridView:GridViewDataColumn DataMemberBinding="{Binding BeginDate, Mode=TwoWay}" >
                           <telerikGridView:GridViewDataColumn.Header>
                               <StackPanel Orientation="Vertical">
                                   <!-- This display the wording Date under Begin.-->
                                   <TextBlock  Text="Begin" HorizontalAlignment="Left" />
                                   <TextBlock  Text="Date" HorizontalAlignment="Left" />
                               </StackPanel>
                           </telerikGridView:GridViewDataColumn.Header>
                           <telerikGridView:GridViewDataColumn.CellTemplate>
                               <DataTemplate>
                                   <TextBlock Text="{Binding BeginDate, Converter={StaticResource DateTimeConverter}, ConverterParameter=d}"/>
                               </DataTemplate>
                           </telerikGridView:GridViewDataColumn.CellTemplate>
                       </telerikGridView:GridViewDataColumn>

Thanks for any help or advice.
KS

[Maya]

Hi Keith Stephens,

You may define a RadDatePicker inside the  CellTemplate/CellEditTemplate and use its properties SelectableDateStart and SelectableDateEnd, which corresponds to the date allowed for start/end. You may take a look at our demos for a reference. Another possible approach may be to define your own custom validation as demonstrated in our online documentation.

All the best,
Maya
the Telerik team

[Keith Stephens]

I am now getting an error: there is no source code available for the current location.
Here is my xaml and refs.

xmlns:telerikNavigation="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls.Navigation"
  xmlns:telerikInput="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls.Input"
 xmlns:telerik="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls"
   xmlns:telerikGridView="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls.GridView"
    x:Class="Agreement.Agreements"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:local="clr-namespace:Agreement"
    mc:Ignorable="d" d:DesignWidth="640" d:DesignHeight="480"

<telerikGridView:GridViewDataColumn  DataMemberBinding="{Binding BeginDate, Mode=TwoWay}" >
                            <telerikGridView:GridViewDataColumn.Header>
                                <StackPanel Orientation="Vertical">
                                    <!-- This display the wording Date under Begin.-->
                                    <TextBlock  Text="Begin" HorizontalAlignment="Left" />
                                    <TextBlock  Text="Date" HorizontalAlignment="Left" />
                                </StackPanel>
                            </telerikGridView:GridViewDataColumn.Header>
                            <telerikGridView:GridViewDataColumn.CellTemplate>
                                <DataTemplate>
                                    <TextBlock Text="{Binding BeginDate, Converter={StaticResource DateTimeConverter}, ConverterParameter=d}"/>
                                </DataTemplate>

                            </telerikGridView:GridViewDataColumn.CellTemplate>
                            <telerikGridView:GridViewDataColumn.CellEditTemplate>
                                <DataTemplate>
                                   <telerikInput:RadDatePicker x:Name="dtBeginDate"
                                   SelectableDateStart=" DateTime.Today"
                                   SelectableDateEnd=" DateTime.Today.AddDays(-30)">

                                   </telerikInput:RadDatePicker>

                                </DataTemplate>
                            </telerikGridView:GridViewDataColumn.CellEditTemplate>

                        </telerikGridView:GridViewDataColumn>

[Maya]

Hi Keith Stephens,

You cannot set the SelectableDateStart Property as "DateTime.Today" in xaml. What you can do is to expose a new custom property holding the information for the "start date" and "end date" as suggested here. For example:

public string SelectableDateStart
{
    get
    {
        return DateTime.Now.ToString(this.DateFormat);
    }
    set{}
}

You can bind it to the SelectableDateStart Property like follows:

<telerik:RadDateTimePicker SelectableDateStart="{Binding Source={StaticResource                             theTime},
                          Path=SelectableDateStart, Mode=OneWay}"/>

I am sending you a sample project illustrating the proposed solution.

Greetings,
Maya
the Telerik team

[Keith Stephens]

Kind of; Just a little modification.

public string SelectableDateStart
       {
           get
           {
               return DateTime.Now.AddDays(-30).ToString(this.DateFormat);
           }
           set { }
       }
       public string SelectableDateEnd
       {
           get
           {
               return DateTime.Now.AddDays(90).ToString(this.DateFormat);
           }
           set { }
       }