Textbox with Dropdown

Textbox with dropdown

Start value: Start text
Return value: Selected or entered text
Supported in: NewEdit Parameter page Multirow

Appearance

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Textbox with dropdown in its initial state. It looks similar to a regular dropdown box.

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But when clicked, it does not open up the dropdown list.

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Instead, it lets the user type as in a normal textbox.

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It's only when the user clicks the down-arrow that the list opens. The user can pick an item in the list, or type something else.

SQL

SQL Call: Retrieve values (mandatory)

SQL-statement that fills the dropdown-control with possible values.

May modify database: No

Resultset: Values

Table count: repeated exactly once
Row count: zero or more rows
Columns
<column with ordinal 1> mandatory string
Value to insert in textbox when the user selects it from the dropdown.
<column with ordinal 2> optional string
Text to show in dropdown.
Default: If omitted the value of the first column will be shown in the dropdown.

Default value

SQL Call: Default value

Retrieves the default value for the control.

May modify database: No

Resultset: Default value

Table count: repeated exactly once
Row count: exactly one row
Columns
<column with ordinal 1> mandatory string
The default value

Validation

SQL Call: Validation

This call is only made if there is a field validation set for the field info and the field has any content. Fields used in an editable grid do not use this call.

Live Validation

Performs field validation when the user leaves the field or one of its dependencies is changed, initial values set by default value and initial values in edit-mode are not validated.

Save Validation

When saving the validation runs server side if the field value has changed. A field value is considered changed if in new mode the value is anything other than NULL. In edit mode it is considered changed if it has a value that was not returned by the GetEditFields procedure.

May modify database: No

Parameters

@Value string
The value of the field, the procedure will not be called if value is NULL.

Resultset: Validation messages (optional)

Table count: repeated zero or one time
Row count: zero or one row
Columns
Error optional string
Error message to display. Blocks the user from saving.
Info optional string
Informative message to display. Does not block saving.
Warning optional string
Warning message to display. Does not block saving.

Best practice

Name of stored procedure

The name depends on the usage. If the control is used to retrieve values from a lookup table then the procedure should be named "<Schema>.<LookupTable>TextboxWithDropdown". If it is not and the values are not directly linked to rows in a table (say for instance you want to retrieve previously used values) then the procedure should be named "<Schema>.<Table><Field>_TextboxWithDropdown".