ALTADataSet.Message: Difference between revisions

Latest revision as of 23:43, 6 September 2016

Occurs when an error is produced. Displays an error message.

Remarks: To hide the messages or write your own code for the event procedure, set the UseEvents property of the object to True. The event is raised by the class methods.

Syntax

_Message(msg, IsCritical)

Parameters

msg

Required. String. The message to display when an error occurs.

IsCritical

Required. Boolean. Indicates whether the error is critical. Default value = False.

Example

The following example provides a simple demonstration on how to customize the event procedure.

VBA
 
 'Specify a variable to handle the event. 
  Public WithEvents ads As ALTADataSet

 '----------------------------  
 Public Sub Main()
   'Associate the event variable with an object. 
    Set ads = New ALTADataSet

   'Set the application to use your event procedure. 
    ads.UseEvents = True

   'Trigger the event by calling the Calculate method without defining a data set.  
    ads.Calculate
    Msgbox("End")
 End Sub

 '---------------------------- 
 Private Sub ads_Message(ByVal msg As String, ByVal IsCritical As Boolean)
   '<Add code here to handle the event.> 
    MsgBox (msg)
 End Sub

VB.NET

 'Specify a variable to handle the event. 
  Public WithEvents ads As ALTADataSet

 '---------------------------- 
 Sub Main()
   'Associate the event variable with an object. 
    ads = New ALTADataSet

   'Set the application to use your event procedure. 
    ads.UseEvents = True

   'Trigger the event by calling the Calculate method without defining a data set.  
    ads.Calculate
    Msgbox("End")
 End Sub

 '---------------------------- 
 Private Sub ads_Message(msg As String, IsCritical As Boolean) Handles ads.Message
   '<Add code here to handle the event.> 
    MsgBox (msg)
 End Sub

@@ Line 1: / Line 1: @@
-{{Template:APIClass|ALTAEvents Class|ALTAEvents}}
+{{Template:API}}{{Template:APIBreadcrumb|.[[ALTADataSet Class|ALTADataSet]]}}
-{{Template:ALTAEvents.Message.Cmt}}
-== Syntax ==
-<ul><li>Message(
-{{APIName|sender}}
-{{APIPrefix|As}}
-{{APIName|[[ALTADataSet Class|ALTADataSet]],}}
-{{APIName|sMsg}}
-{{APIPrefix|As String}}
-{{APIName|,}}
-{{APIName|AdditionalInfo}}
-{{APIPrefix|As String}}
-{{APIName|,}}
-{{APIName|IsCritical}}
-{{APIPrefix|As Boolean}}
-{{APIName|)}}</li></ul>
-Parameters
+<onlyinclude>Occurs when an error is produced. Displays an error message.</onlyinclude>
-:''sender'': An ALTADataSet object
-:''sMsg'': The main display label.
+{{Template:API_EventsNote}}
-:''AdditionalInfo'': The remaining label.
+== Syntax ==
+ '''_Message'''(''msg'', ''IsCritical'')
-:''IsCritical'': Indicates whether the message displayed is critical.
+===Parameters===
+''msg''
+: Required. String. The message to display when an error occurs.
+''IsCritical''
+: Required. Boolean. Indicates whether the error is critical. Default value = False.
-== Usage Example ==
-{{APIComment|Declare the ALTAEvents.}}<br>
+== Example ==
-{{APIComment|Declare the ALTADataSet.}}<br>
+The following example provides a simple demonstration on how to customize the event procedure.
-{{APIComment|Note: The ALTADataSet constructor already creates a new ALTAEvents, which could be used in place of AEvents in the example below.}}
+ '''VBA'''
-        Dim AEvents as New ALTAEvents
-        Dim ADS as New ALTADataSet
+ {{APIComment|'Specify a variable to handle the event.}}
+   {{APIPrefix|Public WithEvents}} ads {{APIPrefix|As}} ALTADataSet
+ {{APIComment|'----------------------------}}
+  {{APIPrefix|Public Sub}} Main()
+   {{APIComment|'Associate the event variable with an object.}}
+     {{APIPrefix|Set}} ads = {{APIPrefix|New}} ALTADataSet
+   {{APIComment|'Set the application to use your event procedure.}}
+     ads.UseEvents = True
+   {{APIComment|'Trigger the event by calling the Calculate method without defining a data set. }}
+     ads.Calculate
+     Msgbox({{APIString|"End"}})
+  {{APIPrefix|End Sub}}
+ {{APIComment|'----------------------------}}
+  {{APIPrefix|Private Sub}} ads_Message({{APIPrefix|ByVal}} msg {{APIPrefix|As String}}, {{APIPrefix|ByVal}} IsCritical {{APIPrefix|As Boolean}})
+   {{APIComment|'<Add code here to handle the event.>}}
+     MsgBox (msg)
+  {{APIPrefix|End Sub}}
-{{APIComment|Show a prompt with the respective strings.}}
+ '''VB.NET'''
-        AEvents.Message(ADS, "Message1", "AdditionalInfo1", False)
+ {{APIComment|'Specify a variable to handle the event.}}
+   {{APIPrefix|Public WithEvents}} ads {{APIPrefix|As}} ALTADataSet
+ {{APIComment|'----------------------------}}
+  {{APIPrefix|Sub}} Main()
+   {{APIComment|'Associate the event variable with an object.}}
+     ads = {{APIPrefix|New}} ALTADataSet
+   {{APIComment|'Set the application to use your event procedure.}}
+     ads.UseEvents = True
+   {{APIComment|'Trigger the event by calling the Calculate method without defining a data set. }}
+     ads.Calculate
+     Msgbox({{APIString|"End"}})
+  {{APIPrefix|End Sub}}
+ {{APIComment|'----------------------------}}
+  {{APIPrefix|Private Sub}} ads_Message(msg {{APIPrefix|As String}}, IsCritical {{APIPrefix|As Boolean}}) {{APIPrefix|Handles}} ads.Message
+   {{APIComment|'<Add code here to handle the event.>}}
+     MsgBox (msg)
+  {{APIPrefix|End Sub}}

ALTADataSet.Message: Difference between revisions

Latest revision as of 23:43, 6 September 2016

Syntax

Parameters

Example

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