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Verify that the File is checked out before checking it in.

When you check in an item in SharePoint, consider verifying that it is checked out using CheckOutType first.

CheckId SPC019011
TypeName CheckFileCheckoutStatusBeforeCheckIn
Severity Warning
Type Assembly

Bad Practice

using (ClientContext context = new ClientContext("http://yourcontexturl"))
{
    var list = context.Web.Lists.GetByTitle("Documents");
    var listItem = list.GetItemById(1);
    context.Load(list);
    context.Load(listItem, i => i.File);
    context.ExecuteQuery();

    listItem.File.CheckIn("My Comment", CheckinType.MajorCheckIn);
    context.ExecuteQuery();
}

Good Practice
using (ClientContext context = new ClientContext("http://yourcontexturl"))
{
    var list = context.Web.Lists.GetByTitle("Documents");
    var listItem = list.GetItemById(1);
    context.Load(list);
    context.Load(listItem, i => i.File);
    context.ExecuteQuery();

    if (listItem.File.CheckOutType != CheckOutType.None)
    {
        listItem.File.CheckIn("My Comment", CheckinType.MajorCheckIn);
        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", "SPC019011:CheckFileCheckoutStatusBeforeCheckIn", Justification = "Provide reason for suppression here")]
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