Date Picker error

Permanently deleted user

May 27, 2015 20:21

Hi, I have a workflow with Date Picker, in the Output Arguments I use "dataStartDate" for "PickDateStart" and "dateEndDate" for "PickDateEnd" and for both variables I use the tpye as "DateTime", it gives the following error message:

Compiler error(s) encountered processing expression "dateStartDate" ("dateEndDate").  Option Strict On disallows implicit conversions from 'Date' to 'String'.

Any ideas on how to fix this?

Thanks.

Sharon

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  Permanently deleted user

  May 27, 2015 20:39

  Hi Sharon,

  What activity in your workflow produces this error message?

  If you're attempting to produce something like an alert to show the user the start date and end date you'll need to convert the value to a string first.

  Warren

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  Permanently deleted user

  May 27, 2015 20:46

  Hi Warren,

  I'm trying to make a report in a time range, so I need to pick start date and end date.

  When I put those two "DateTime" type variables into the time picker, then I got this error messages right away.

  Sharon

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  Permanently deleted user

  May 27, 2015 21:11

  Hi Sharon,

  I can't seem to reproduce the same message that you have indicated. Would you be able to post a screenshot or paste the xaml of your workflow? I'll take a look at it and see if I can figure out whats going on.

  Warren

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  Permanently deleted user

  May 27, 2015 21:27

  Here is the screenshot.

  /customer/servlet/servlet.FileDownload?file=00P6000000elzbcEAA

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  Permanently deleted user

  May 27, 2015 21:44

  Hi Sharon,

  I can't see anything that appears to be wrong in that screenshot, try opening your workflow file with notepad and copy/paste the contents into this thread below so I can open it.

  Also can you confirm that the variable type is System.DateTime and not any other flavour?

  Warren

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  Permanently deleted user

  May 27, 2015 22:02

  Hi Sharon,

  So I opened up the workflow and inspected the variables and a strange thing happened. If I cleared the variables from the Output Argument boxes and re-added them the error dissappeared. I then reviewed the inital xaml again and found that for some reason the Argument Type was set to expect a string variable rather than a DateTime variable (below). So try clearing the box and setting the variable again.

  Warren

  <gwa:ArgumentWrapper x:TypeArguments="OutArgument" IsRequired="False" Name="PickDateStart">

   

  <gwa:ArgumentWrapper.Argument>

   

  <OutArgument x:TypeArguments="x:String ">[dateStartDate]</OutArgument>

   

  </gwa:ArgumentWrapper.Argument>

   

  </gwa:ArgumentWrapper>

   

  <gwa:ArgumentWrapper x:TypeArguments="OutArgument" IsRequired="False" Name="PickDateEnd">

   

  <gwa:ArgumentWrapper.Argument>

   

  <OutArgument x:TypeArguments="x:String ">[dateEndDate]</OutArgument>

   

  </gwa:ArgumentWrapper.Argument>

   

  </gwa:ArgumentWrapper>

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  Nico Burgerhart

  May 27, 2015 22:04

  Or remove and recreate the DatePicker form elements.

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  Permanently deleted user

  May 27, 2015 22:18

  Hi Nico,

  I made a new one, but it still have same error.

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  Nico Burgerhart

  May 27, 2015 22:25

  Use a different name for the argument, or use Warren's solution.

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  Permanently deleted user

  May 27, 2015 22:40

  I started in a new, blank workflow and just added a single DatePicker form. When I try to assign the Output Arguments of the DatePicker to a System.DateTime format, I get the following error:

  "Compiler error(s) encountered processing expression "dateTest".Invalid L-Value expression.; Reference expresions cannot end with Conversion. The provided expressions type must exactly match the type T of the VisualBasicReference<T> or LamdaReference<T>."

  Do I need to use a different format for the DatePicker Results?

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  Permanently deleted user

  May 27, 2015 22:57

  To (https://support.geocortex.com/ProfileView.aspx?userid=11181) xiaoyun.zhao

  The Output argument for the DatePicker Form control on DisplayForm expectes its Variable Type 'System.Nullable<System.DateTime>', rather than 'System.DateTime'.

  As the tip, when you create a variable for the Ougument, you may use 'Create Variable'.

  1) Check if 'Enable Intellisense' is off on Edit menu on Workflow designer

  2) Mouse focus on the Textbox for the output argument you want to creater variable for on DisplayForm, and type 'c', which will show 'Create Variable' suggestion.

  3) Select and click 'Create Variable', which will popup UI where you can set the Varibel Name and it will show you the correct Variable Type for the Display Form control.

   

  Munhwan

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  Permanently deleted user

  May 27, 2015 23:05

  It works now.  Thank you so much.

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  Permanently deleted user

  July 17, 2015 03:11

  Munwhan Gim was just the ticket!  Very easy fix! Thanks for saving me this headache!

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  Patrick Kelleher

  November 02, 2015 16:10

  +1

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  Carmen Durham

  March 29, 2017 19:57

  Yes, I was going crazy trying to figure this out.  I would have NEVER guessed system.nullable<system.datetime>

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