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You must call List.Update() to persist any changes to the List object.

When modifying the List object you need to call List.Update() in order to persist the changes to the object.

CheckId SPC019008
TypeName UpdateAfterModifyingListObject
Severity Warning
Type Assembly

Bad Practice

using (var context = new ClientContext("http://yoursite"))
{
    Web web = context.Web;
    ListCreationInformation creationInfo = new ListCreationInformation
    {
        Title = "My New List",
        TemplateType = (int) ListTemplateType.GenericList
    };

    List list = web.Lists.Add(creationInfo);
    list.Description = "New List Description";
    context.ExecuteQuery();
}


Good Practice
using (var context = new ClientContext("http://yoursite"))
{
    Web web = context.Web;
    ListCreationInformation creationInfo = new ListCreationInformation
    {
        Title = "My New List",
        TemplateType = (int) ListTemplateType.GenericList
    };

    List list = web.Lists.Add(creationInfo);
    list.Description = "New List Description";

    list.Update();
    context.ExecuteQuery();
}

To suppress this violation in managed code add the following attribute to the method which contains the instruction (available since SPCAF version v5.2). Learn more about SuppressMessage here.

// Important: Ensure to have #define CODE_ANALYSIS at the beginning of your .cs file
[SuppressMessage("SPCAF.Rules.ManagedCSOM.CSOMCorrectnessGroup", "SPC019008:UpdateAfterModifyingListObject", Justification = "Provide reason for suppression here")]
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