ListItemAllFields.Update() cannot update multiple lines text field with more than 255 characters.

[IllumiC]

Category

• Bug

Describe the bug

IFolder.ListItemAllFields.Update() fails when updating a multiple line text field to more than 255 characters.
Instead, IList.ListItemAllFields.UpdateOverwriteVersionAsync() must be used.

Steps to reproduce

IFolder.ListItemAllFields["MultiLineText"] = "255 Chars Limit, 255 Chars Limit, 255 Chars Limit, 255 Chars Limit, 255 Chars Limit, 255 Chars Limit, 255 Chars Limit, 255 Chars Limit, 255 Chars Limit, 255 Chars Limit, 255 Chars Limit, 255 Chars Limit, 255 Chars Limit, 255 Chars Limit, 255 Chars Limit!!";
IFolder.ListItemAllFields.UpdateOverwriteVersionAsync(); // Works

IFolder.ListItemAllFields["MultiLineText"] = "255 Chars Limit, 255 Chars Limit, 255 Chars Limit, 255 Chars Limit, 255 Chars Limit, 255 Chars Limit, 255 Chars Limit, 255 Chars Limit, 255 Chars Limit, 255 Chars Limit, 255 Chars Limit, 255 Chars Limit, 255 Chars Limit, 255 Chars Limit, 255 Chars Limit!!";
IFolder.ListItemAllFields.Update(); // Works

IFolder.ListItemAllFields["MultiLineText"] = "280 Chars Limit, 280 Chars Limit, 280 Chars Limit, 280 Chars Limit, 280 Chars Limit, 280 Chars Limit, 280 Chars Limit, 280 Chars Limit, 280 Chars Limit, 280 Chars Limit, 280 Chars Limit, 280 Chars Limit, 280 Chars Limit, 280 Chars Limit, 280 Chars Limit, 280 Chars Limit!!";
IFolder.ListItemAllFields.UpdateOverwriteVersionAsync(); // Works

IFolder.ListItemAllFields["MultiLineText"] = "280 Chars Limit, 280 Chars Limit, 280 Chars Limit, 280 Chars Limit, 280 Chars Limit, 280 Chars Limit, 280 Chars Limit, 280 Chars Limit, 280 Chars Limit, 280 Chars Limit, 280 Chars Limit, 280 Chars Limit, 280 Chars Limit, 280 Chars Limit, 280 Chars Limit, 280 Chars Limit!!";
IFolder.ListItemAllFields.Update(); // Fails

Gives the generic error to check if the field exists.

Expected behavior

Text is updated.

Environment details (development & target environment)

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• SDK version: 1.12.0 / 1.13.0
• OS: Windows 10
• SDK used in: Azure WebJob (manually triggered)
• Framework: .NET Core 6.0
• Browser(s): Console
• Tooling: Visual Studio 2022

[jansenbe]

@IllumiC : do you have an option to check this behaviour from the UI with Fiddler (or alternative) and verify is another API call is used when the field content exceeds 255 chars?

[IllumiC]

Hi jansenbe, apologies but I'm not able to investigate it myself further due to timeline constraints. Kind regards.