Hi ,
I have defined one XamGrid with ComboBoxColumn.
<ig:XamGrid x:Name="ManageRecipeStateGrid" AutoGenerateColumns="False" ColumnWidth="*" ItemsSource="{Binding ManageRecipeStateResults}">
<ig:XamGrid.GroupBySettings>
<ig:GroupBySettings AllowGroupByArea="Hidden" GroupByOperation="MergeCells" />
</ig:XamGrid.GroupBySettings>
<ig:XamGrid.Columns>
<ig:TextColumn Key="RecipeKey" Visibility="Collapsed" />
<ig:TextColumn Key="MandatoryCriteriaList" HeaderText="Recipe" IsReadOnly="True" >
</ig:TextColumn>
<ig:TextColumn Key="RecipeVersion" HeaderText="Version" IsReadOnly="True">
<ig:TextColumn Key="PreviousRecipeState" Visibility="Collapsed" />
<ig:ComboBoxColumn Width="120" HorizontalContentAlignment="Stretch"
ItemsSource="{Binding Source={StaticResource optionList}}" Key="CurrentRecipeState"
SelectedValuePath="State"
DisplayMemberPath="State"
AllowEditingValidation="True" HeaderText="Recipe State">
</ig:ComboBoxColumn>
<ig:CheckBoxColumn Key="IsPreserved" HeaderText="Preserve Recipe">
</ig:CheckBoxColumn>
</ig:XamGrid.Columns>
<ig:XamGrid.EditingSettings>
<ig:EditingSettings AllowEditing="Hover" />
</ig:XamGrid.EditingSettings>
</ig:XamGrid>
Now I want to handle the event whenever I change the item selection in ComboBoxColumn. How I can handle this ?
Hello,
Thank you for your post. I have been investigating how you can handle the selection changed event of the ComboBoxColumns and since the column is using a ComboBox as an editor when the cell is in edit mode, you can handle the SelectionChange event of the ComboBox. To do that, you can handle the CellEnteredEditMode event of the XamGrid and if the cell is of the ComboBoxColumn you can handle the SelectionChanged event. Here is an example for that:
private void ManageRecipeStateGrid_CellEnteredEditMode(object sender, Infragistics.Controls.Grids.EditingCellEventArgs e) { if (e.Cell.Column.Key.Equals("CurrentRecipeState")) { (e.Cell.Control.Content as ComboBox).SelectionChanged += new SelectionChangedEventHandler(MainWindow_SelectionChanged); } } void MainWindow_SelectionChanged(object sender, SelectionChangedEventArgs e) { //Do Something }
Another approach that you can use is creating a TemplteColumn instead of a ComboBoxColumn and in the EidorTemplate you can add a XamComboEdior and handle the SelectedItemChanged event. I have created a sample application for you, based on the code snippet that you have provide, which implements the mentioned approach.
Please let me know if you need any further assistance on the matter.
Sincerely,
Krasimir
Developer Support Engineer
Infragistics
www.infragistics.com/support
Hi,
How to select a selecteditem from combobox.
combobox.sleecteditem properties is not availablethen how we can store the sleecteditem to sql table?
can u give any idea?
thanks
Hi Krasimir,
This looks fine. I have one scenario where I select some state for eg. State 2 from drop down , now we have checkbox column (Preserve Recipe) in that row, I want to restrict the user to check the checkbox if he selects State 2 from drop down and show him the appropriate message "Cannot check the checkbox for this record because Recipe State is State 2" . Can you please help with this.
Thanks
Arpita
Can you please help with this ?
Can you please help ?
Hello Arpita,
Thank you for your replies. I have been looking into the requirement that you are having and I can suggest using the CellEnteringEditMode event of the XamGrid in order to restring the changing of the value in the CheckboxColumn. In the CellEnteringEditMode event handler, you can get the column and the value of the Combo column and if the value of the combo column is “State 2” and the e.Cell.Column.Key is “IsPreserved”, you can cancel the event and show message box, with the text you wish. Here is an example for doing that:
Xaml:
<ig:XamGrid x:Name="ManageRecipeStateGrid" AutoGenerateColumns="False" ColumnWidth="*" ItemsSource="{Binding ManageRecipeStateResults}" RowHeight="Dynamic" CellControlAttached="ManageRecipeStateGrid_CellControlAttached" CellEnteringEditMode="ManageRecipeStateGrid_CellEnteringEditMode"> ................
C#:
private void ManageRecipeStateGrid_CellEnteringEditMode(object sender, BeginEditingCellEventArgs e) { if (e.Cell.Column.Key.Equals("IsPreserved") && e.Cell.Row.Cells["CurrentRecipeState"].Value.Equals("State 2") ) { e.Cancel = true; MessageBox.Show("Cannot check the checkbox for this record because Recipe State is State 2"); } }
I tried your solution. In my XamGrid I have this setting .
<ig:XamGrid.EditingSettings
>
<ig:EditingSettings AllowEditing
="Hover" />
</ig:XamGrid.EditingSettings
So after implementing your solution as soon as I hover on Preserve Recipe cell (where sate is State 2) I get this message which is correct but I dont want to pop up message on hover , I want to pop up message when I try to check the box.
One more thing I cannot change AllowEditing="Cell" because then it takes 3 clicks to check just a single check box. I have attached my modified solution with your solution implemented. Please check how we can handle this or is there any other way we can handle this scenario.
Thank you for your reply. I am very glad that the approach I have suggested was helpful for you. Please let me know if you need any further assistance on the matter.
Thanks for the help. This works for me.
I am just checking if you require any further assistance on the matter.
Thank you for your reply. I am very glad that the approach I have suggested was helpful. I am using the SetCellValue method, since the Cell.Value property is read only and you can set the value of the cell, through the cell itself. This method is creating a CellValueObject which contains one dependency property and then creates a Binding between the property that corresponds to the current cell and the Value property of the CellValueObject, through the Data of the current row. After that, it sets the Value property of the CellValueObject, which triggers the Binding and this way the value of the property that corresponds to the cell is set, without interacting with the Data item of the current row.
Regarding the code that you have mentioned, in the CellExitingEditMode, I am de-attaching the handler, since each time the editor enters edit mode, a handler is attached to the Click event. If this code is commented, the hadnlers of the event will increase with one each time the Cell enters edit mode. This will case multiple execution of the the same function and when you enter ‘n’ times edit mode, for one cell and then click on the CheckBox, you will see that ‘n’ MessageBoxes are opened one after another.
Thsi is fine. Can you please explain this SetCellValue function and why you have used this line
(e.Editor
as CheckBox).Click -= new RoutedEventHandler
(MainWindow_Click);
in CellExitingEditMode event.