Blog: Posts from March, 2013

Posts from March, 2013
Sunday, March 31, 2013PrintSubscribe
When Last Command Name

Actions in the Code On Time user interface are displayed based on several conditions. When the conditions are fulfilled, the action is displayed. The When Last Command Name condition will only display an action when the previous action matches the specified command name. If When Last Command Name is null, the action will be displayed if Select action or no action is performed and the other conditions are matched.

For example, when a Customers record is selected, the Edit, Delete, and Close actions are displayed. New Customers action is available on the action bar, as well as Actions and Report dropdowns.

Edit, Delete, and Close actions displayed when a record is selected.

When the Edit action is activated, the buttons are replaced by OK, Delete, and Cancel. The action bar only has one dropdown, Record.

OK, Delete, and Cancel actions displayed when a record is edited.

Note that all reporting actions have been hidden. Let’s add another Report action what will only be displayed after Edit action has been performed.

Start the Project Designer. In the Project Explorer, switch to the Controllers tab. Right-click on Customers / Actions / ag7 (ActionBar) – Report node, and press New Action.

Creating a new action for Customers controller.

Assign the following values:

Property Value
Command Name Report (PDF)
Header Text Create a report
When Last Command Name Edit
Description Creates a PDF report when editing a record.

Press OK to save the action. On the toolbar, press Browse.

Navigate to Customers page and select a record. The new Report action is not displayed.

The new Report action is not yet displayed on the action bar.

Start editing the record. The new action will appear as the only option in the Report dropdown.

When Edit action is triggered, the new Report action is displayed.

Sunday, March 31, 2013PrintSubscribe
Auto Hide Data Views

The Auto Hide property is used to hide child data views or containers when a master record has not been selected.


Let’s create a page that will contain two data views: Customers and Orders. The orders will be filtered by the selected customer.

Start the Project Designer. In the Project Explorer toolbar, click on the New Page icon.

Creating a new page.

Assign a name to the page.

Property Value
Name Auto Hide Test

Press OK to save the page. In the Project Explorer, drop the new page node on the right side of Home node to place it second in the menu.

Moving Auto Hide Test page.

Switch to the Controllers tab. Hold down Ctrl key, and click on Customers and Orders data controller nodes. Right-click, and press Copy.

Copying Customers and Orders data controller nodes.

Switch back to the Pages tab. Right-click on Auto Hide Test page, and press Paste. The controllers will be instantiated as data views in individual containers.

Pasting onto 'Auto Hide Test' page.     Two data views instantiated from the pasted data controllers.

Double-click on Auto Hide Test / c102 / view2 (Orders) node. Make the following changes:

Property Value
View grid1
Filter Source view1
Filter Field #1 CustomerID
Auto Hide Self

Press OK to save. On the toolbar, press Browse.

Navigate to the Auto Hide Test page. Note that only a list of customers is visible on the page.

Only master data views is visible on the page.

When a customer is selected, the filtered list of orders is displayed underneath.

When master record is selected, the child view is displayed.


When there are multiple child data views in a single container or tabs, it is advisable to hide the whole container instead.

In the Project Explorer, double-click on Auto Hide Test / c102 / view2 (Orders, grid1) –> view1 node.

Node view1 in container c102 of page Auto Hide Test.

Change the following values:

Property New Value
Activator Tab
Text Orders

Save the data view. Browse the web app – notice that the tab element is not hidden when no customer is selected.

The tab element is not hidden.

The data view will appear when a master record is selected.

Data view is shown when master record is selected.

Switch back to the Project Designer, and change Auto Hide to “Container”.

Property New Value
Auto Hide Container

Press OK to save, and press Browse. The tab element will now be hidden.

Tab element is now hidden.

Note that if the master view is in the same container as the child view, an Auto Hide of “Container” will hide both views.

Sunday, March 31, 2013PrintSubscribe
Changing Upload Size Limit

Code On Time automatically handles file uploading and downloading for blob fields. However, ASP.NET limits file upload size to 4 MB by default. When a user attempts to upload a larger file, an error will be thrown.

Error message showing that max request length is exceeded.

Let’s change the file size limit in order to allow for larger files to be uploaded.

Start the web application generator. Click on the project name, and select Settings. Press Web Server Configuration.

In the Web.Config modification instructions, insert the following:

AppendChild: /configuration/system.web

<httpRuntime maxRequestLength="102400" />

The maxRequestLength value is the size limit in KB.

Press Finish, and continue to regenerate the web application. When a file larger than 4 MB is uploaded, the upload will no longer throw an error.

File upload has been successful.