Examples of errors detected by the V3025 diagnostic

V3025. Incorrect format. Consider checking the N format items of the 'Foo' function.

SharpDevelop

V3025 Incorrect format. A different number of actual arguments is expected while calling 'Format' function. Expected: 4. Present: 6. MonoSymbolTable.cs 235

public override string ToString ()
{
  return
    String.Format("[Line {0}:{1,2}-{3,4}:{5}]",
                  File, Row, Column, EndRow, EndColumn, Offset);
}

SharpDevelop

V3025 Incorrect format. A different number of actual arguments is expected while calling 'Format' function. Expected: 2. Present: 3. Thread.cs 235

public override string ToString()
{
  return String.Format("Thread Name = {1} Suspended = {2}",
                       ID, Name, Suspended);
}

Microsoft Code Contracts

V3025 Incorrect format. A different number of actual arguments is expected while calling 'Format' function. Expected: 3. Present: 2. VSServiceProvider.cs 515

void AskToReportError(Exception exn) {
  ....
  var emailBody = new StringBuilder();
  emailBody.AppendLine("Hi Code Contracts user,");
  emailBody.AppendLine();
  ....
  emailBody.AppendLine(
    String.Format(".... {0} {1} Visual Studio {2} Bug Report",
      typeof(VSServiceProvider).Assembly.GetName().Version,
#if DEBUG
                                                 "Debug"
#else
                                                 "Release"
#endif
                                           ));
  ....
}

Microsoft Code Contracts

V3025 Incorrect format. A different number of actual arguments is expected while calling 'Format' function. Expected: 1. Present: 2. Output.cs 68

public override void WriteLine(string value)
{
  output.WriteLine(string.Format("{1}", DateTime.Now,
    value.Replace("{", "{{").Replace("}","}}")));
  //output.WriteLine(string.Format("[{0}] {1}",
    //DateTime.Now., value));
}

Similar errors can be found in some other places:

• V3025 Incorrect format. A different number of actual arguments is expected while calling 'Format' function. Expected: 6. Present: 7. CacheModelExtensions.cs 46
• V3025 Incorrect format. A different number of actual arguments is expected while calling 'Format' function. Expected: 1. Present: 2. CodeFixesInference.cs 1608
• V3025 Incorrect format. A different number of actual arguments is expected while calling 'Format' function. Expected: 2. Present: 3. ExpressionManipulation.cs 442

MonoDevelop

V3025 Incorrect format. A different number of format items is expected while calling 'Format' function. Expected: 3. Present: 4. MonoDevelop.Core ConditionParser.cs 254

ConditionExpression ParseReferenceExpression (string prefix)
{
  StringBuilder sb = new StringBuilder ();

  string ref_type = prefix [0] == '$' ?
                      "a property" : "an item list";
  int token_pos = tokenizer.Token.Position;
  IsAtToken (TokenType.LeftParen, String.Format (
             "Expected {0} at position {1} in condition \"{2}\".
             Missing opening parantheses after the '{3}'.",
             ref_type, token_pos, conditionStr, prefix));
  ....

  IsAtToken (TokenType.RightParen, String.Format (
             "Expected {0} at position {1} in condition \"{2}\".
              Missing closing parantheses'.",
              ref_type, token_pos, conditionStr, prefix));
  ....
}

Similar errors can be found in some other places:

• V3025 Incorrect format. A different number of format items is expected while calling 'Format' function. Expected: 1. Present: 2. MonoDevelop.Xml XmlFormatterWriter.cs 1131
• V3025 Incorrect format. A different number of format items is expected while calling 'Format' function. Expected: 4. Present: 6. ICSharpCode.NRefactory.CSharp MonoSymbolTable.cs 235
• V3025 Incorrect format. A different number of format items is expected while calling 'Format' function. Expected: 1. Present: 2. MonoDevelop.Ide HelpOperations.cs 212
• And 2 additional diagnostic messages.

IronPython and IronRuby

V3025 Incorrect format. A different number of format items is expected while calling 'Format' function. Expected: 1. Present: 2. ConversionWrappers.cs 235

public T Current {
  get {
    try {
      return (T)enumerable.Current;
    }
    catch (InvalidCastException iex) {
      throw new InvalidCastException(string.Format(
    "Error in IEnumeratorOfTWrapper. Could not cast: {0} in {0}",
    typeof(T).ToString(),
    enumerable.Current.GetType().ToString()),
    iex);
    }
  }
}

IronPython and IronRuby

V3025 Incorrect format. A different number of format items is expected while calling 'WriteLine' function. Expected: 2. Present: 3. Program.cs 268

private static void DumpGenericParameters(
  MetadataTableView genericParams,
  MetadataRecord owner) {
  foreach (GenericParamDef gp in genericParams) {
    _output.WriteLine("  generic parameter #{0}: {1}",
    gp.Index, gp.Name, gp.Attributes);
  ....
}

.NET Compiler Platform ("Roslyn")

V3025 Incorrect format. A different number of format items is expected while calling 'Format' function. Expected: 2. Present: 3. CompilerServerLogger.cs 49

static CompilerServerLogger()
{
  ....
  loggingFileName = Path.Combine(loggingFileName,
    string.Format("server.{1}.{2}.log",
                  loggingFileName,
                  GetCurrentProcessId(),
                  Environment.TickCount));
  ....
}

.NET Compiler Platform ("Roslyn")

V3025 Incorrect format. A different number of format items is expected while calling 'Format' function. Expected: 2. Present: 1. CompilerPackage.cs 105

private const string WriteFileExceptionMessage =
  @"{1}
  To reload the Roslyn compiler package, close Visual Studio and
  any MSBuild processes, then restart Visual Studio.";

private void WriteMSBuildFiles(....)
{
  ....
  catch (Exception e)
  {
    VsShellUtilities.ShowMessageBox(
      this,
      string.Format(WriteFileExceptionMessage, e.Message),
      null,
      OLEMSGICON.OLEMSGICON_WARNING,
      OLEMSGBUTTON.OLEMSGBUTTON_OK,
      OLEMSGDEFBUTTON.OLEMSGDEFBUTTON_FIRST);
  }
}

.NET Compiler Platform ("Roslyn")

V3025 Incorrect format. A different number of format items is expected while calling 'WriteLine' function. Expected: 3. Present: 1. LoadingAttributes.cs 551

private void DumpAttributes(Symbol s)
{
  int i = 0;
  foreach (var sa in s.GetAttributes())
  {
    int j = 0;
    foreach (var pa in sa.CommonConstructorArguments)
    {
      Console.WriteLine("{0} {1} {2}", pa.ToString());
      j += 1;
    }
    j = 0;
    foreach (var na in sa.CommonNamedArguments)
    {
      Console.WriteLine("{0} {1} {2} = {3}",
                        na.Key, na.Value.ToString());
      j += 1;
    }
    i += 1;
  }
}

Similar errors can be found in some other places:

• V3025 Incorrect format. A different number of format items is expected while calling 'WriteLine' function. Expected: 4. Present: 2. LoadingAttributes.cs 558

Xenko

V3025 Incorrect format. A different number of format items is expected while calling 'Format' function. Expected: 4. Present: 3. SiliconStudio.Core.Mathematics Color3.cs 765

public string ToString(string format,
                                IFormatProvider formatProvider)
{
  if (format == null)
    return ToString(formatProvider);

  return string.Format(
                      formatProvider,
                      "Red:{1} Green:{2} Blue:{3}",
                      R.ToString(format, formatProvider),
                      G.ToString(format, formatProvider),
                      B.ToString(format, formatProvider));
}

Xenko

V3025 Incorrect format. A different number of format items is expected while calling 'Format' function. Expected: 1. Present: 2. SiliconStudio.Core.Design NamingHelper.cs 56

public static bool IsValidNamespace(
                            string text, out string error)
{
  ....
  error = items.Where(s => !IsIdentifier(s))
               .Select(item =>
                            string.Format("[{0}]", item, text))
               .FirstOrDefault();
  ....
}

Unity3D

V3025 Incorrect format. A different number of format items is expected while calling 'WriteLine' function. Arguments not used: port. AssetBundleDemo AssetBundleServer.cs 59

public static void Main(string[] args)
{
  ....
  Console.WriteLine("Starting up asset bundle server.", port);
  ....
}

MSBuild

V3025 Incorrect format. A different number of format items is expected while calling 'WriteLine' function. Arguments not used: 1st. Scheduler.cs 2216

private void DumpSchedulerState()
{
  ....
  file.WriteLine("Scheduler state at timestamp {0}:",
    _schedulingData.EventTime.Ticks);
  file.WriteLine("--------------------------------------------",
    _schedulingData.EventTime.Ticks);  // <=
  ....
}

Similar errors can be found in some other places:

• V3025 Incorrect format. A different number of format items is expected while calling 'Format' function. Arguments not used: resource. XmlUtil.cs 75
• V3025 Incorrect format. A different number of format items is expected while calling 'Format' function. Arguments not used: resource. XmlUtil.cs 82
• V3025 Incorrect format. A different number of format items is expected while calling 'Format' function. Arguments not used: resource. XmlUtil.cs 91
• And 1 additional diagnostic messages.

Mono

V3025 Incorrect format. A different number of format items is expected while calling 'Format' function. Arguments not used: url. corlib-net_4_x RemotingServices.cs 700

static IMessageSink GetClientChannelSinkChain(string url, ....)
{
  ....
  if (url != null)
  {
    string msg = String.Format (
      "Cannot create channel sink to connect to URL {0}.
       An appropriate channel has probably not been registered.",
      url);
    throw new RemotingException (msg);
  }
  else
  {
    string msg = String.Format (
      "Cannot create channel sink to connect
       to the remote object.
       An appropriate channel has probably not been registered.",
      url);
    throw new RemotingException (msg);
  }
  ....
}

Mono

V3025 Incorrect format. A different number of format items is expected while calling 'Format' function. Arguments not used: text. System.Windows.Forms-net_4_x ListViewItem.cs 1287

public override string ToString ()
{
  return string.Format ("ListViewSubItem {{0}}", text);
}

Mono

V3025 Incorrect format. A different number of format items is expected while calling 'Format' function. Format items not used: {2}. Arguments not used: 1st. System.ServiceModel-net_4_x WSTrustMessageConverters.cs 147

void ReadEntropy ()
{
  if (reader.IsEmptyElement)
    throw new XmlException (
      String.Format ("WS-Trust Entropy element is empty.{2}",
                      LineInfo ()));
  ....
}

GitExtensions

V3025 Incorrect format. A different number of format items is expected while calling 'WriteLine' function. Arguments not used: pluginFile.Name. GitUI LoadPlugins.cs 35

public static void Load()
{
  ....
  Debug.WriteLine("Loading plugin...", pluginFile.Name); // <=
  ....
}

Umbraco

V3025 Incorrect format. A different number of format items is expected while calling 'Format' function. Format items not used: {1}. Arguments not used: 1st. HtmlHelperRenderExtensions.cs 938

public static IHtmlString EnableCanvasDesigner(....)
{
  ....
  string noPreviewLinks = @"<link href=""{1}"" type=
    ""text/css"" rel=""stylesheet"
    " data-title=""canvasdesignerCss"" />";
  ....
  if (....)
    result = string.Format(noPreviewLinks, cssPath) +
             Environment.NewLine;
  ....
}

Similar errors can be found in some other places:

• V3025 Incorrect format. A different number of format items is expected while calling 'Format' function. Format items not used: {1}. Arguments not used: 1st. HtmlHelperRenderExtensions.cs 946
• V3025 Incorrect format. A different number of format items is expected while calling 'Format' function. Arguments not used: path. requestModule.cs 204
• V3025 Incorrect format. A different number of format items is expected while calling 'Format' function. Arguments not used: Alias.Replace(" ", ""). Template.cs 382
• And 2 additional diagnostic messages.

Unity C# reference source code

V3025 CWE-685 Incorrect format. A different number of format items is expected while calling 'Format' function. Arguments not used: index. Physics2D.bindings.cs 2823

public void SetPath(....)
{
  if (index < 0)
    throw new ArgumentOutOfRangeException(
      String.Format("Negative path index is invalid.", index));
  ....
}

AWS SDK for .NET

V3025 [CWE-685] Incorrect format. A different number of format items is expected while calling 'Format' function. Arguments not used: AWSConfigs.AWSRegionKey. AWSSDK.Core.Net45 AWSRegion.cs 116

public InstanceProfileAWSRegion()
{
  ....
  if (region == null)
  {
    throw new InvalidOperationException(
      string.Format(CultureInfo.InvariantCulture,
        "EC2 instance metadata was not available or did not contain
          region information.",
        AWSConfigs.AWSRegionKey));
  }
  ....
}

Azure PowerShell

V3025 Incorrect format. A different number of format items is expected while calling 'Format' function. Arguments not used: this.ResourceGroupName. NewScheduledQueryRuleCommand.cs 117

protected override void ProcessRecordInternal()
{
  ....
  if (this.ShouldProcess(this.Name,
    string.Format("Creating Log Alert Rule '{0}' in resource group {0}",
      this.Name, this.ResourceGroupName)))
  {
    ....
  }
  ....
}

Similar errors can be found in some other places:

• V3025 Incorrect format. A different number of format items is expected while calling 'Format' function. Arguments not used: this.ResourceGroupName. RemoveScheduledQueryRuleCommand.cs 88

ILSpy

V3025 Incorrect format. A different number of format items is expected while calling 'Format' function. Arguments not used: End. ICSharpCode.Decompiler Interval.cs 269

public override string ToString()
{
  if (End == long.MinValue)
  {
    if (Start == long.MinValue)
      return string.Format("[long.MinValue..long.MaxValue]", End); // <=
    else
      return string.Format("[{0}..long.MaxValue]", Start);
  }
  else if (Start == long.MinValue)
  {
    return string.Format("[long.MinValue..{0})", End);
  }
  else
  {
    return string.Format("[{0}..{1})", Start, End);
  }
}

ILSpy

V3025 Incorrect format. A different number of format items is expected while calling 'AppendFormat' function. Arguments not used: angle. ILSpy.BamlDecompiler XamlPathDeserializer.cs 177

public static string Deserialize(BinaryReader reader)
{
  ....
  var sb = new StringBuilder();
  ....
  sb.AppendFormat(CultureInfo.InvariantCulture,
                  "A{0} {2:R} {2} {3} {4}",
                  size, angle, largeArc ? '1' : '0',
                  sweepDirection ? '1' : '0', pt1);
  ....
}

PeachPie

V3025 Incorrect format. A different number of format items is expected while calling 'WriteLine' function. Arguments not used: 1st, 2nd, 3rd, 4th, 5th. Mail.cs 25

public static void WriteLine(string format, params object[] args);

public static bool mail(....)
{
  // to and subject cannot contain newlines, replace with spaces
  to = (to != null) ? to.Replace("\r\n", " ").Replace('\n', ' ') : "";
  subject = (subject != null) ? subject.Replace("\r\n", " ").Replace('\n', ' ')
                              : "";

  Debug.WriteLine("MAILER",
                  "mail('{0}','{1}','{2}','{3}')",
                  to,
                  subject,
                  message,
                  additional_headers);

  var config = ctx.Configuration.Core;

  ....
}

LINQ to DB

V3025 Incorrect format. A different number of format items is expected while calling 'AppendFormat' function. Arguments not used: 1st. ExpressionTestGenerator.cs 663

void BuildType(Type type, MappingSchema mappingSchema)
{
  ....
  _typeBuilder.AppendFormat(
    type.IsGenericType ?
@"
{8} {6}{7}{1} {2}<{3}>{5}
  {{{4}{9}
  }}
"
:
@"
{8} {6}{7}{1} {2}{5}
  {{{4}{9}
  }}
",
    MangleName(isUserName, type.Namespace, "T"),
    type.IsInterface ? "interface"
                     : type.IsClass ? "class"
                                    : "struct",
    name,
    type.IsGenericType ? GetTypeNames(type.GetGenericArguments(), ",")
                       : null,
    string.Join("\r\n", ctors),
    baseClasses.Length == 0 ? ""
                            : " : " + GetTypeNames(baseClasses),
    type.IsPublic ? "public "
                  : "",
    type.IsAbstract && !type.IsInterface ? "abstract "
                                         : "",
    attr,
    members.Length > 0 ? (ctors.Count != 0 ? "\r\n" : "") +
                         string.Join("\r\n", members)
                       : string.Empty);
}

DotNetNuke

V3025 Incorrect format. A different number of format items is expected while calling 'Format' function. Arguments not used: Globals.ApplicationPath. jQuery.cs 402

public static void KeepAlive(Page page)
{
  ....
  var scriptBlock = string.Format(
    "(function($){{setInterval(
      function(){{$.get(location.href)}}, {1});}}(jQuery));",
    Globals.ApplicationPath,
    seconds);
  ....
}

Barotrauma

V3025 Incorrect format. A different number of format items is expected while calling 'Format' function. Arguments not used: t.Character.Name. DebugConsole.cs 1123

private static void InitProjectSpecific()
{
  AssignOnClientRequestExecute("traitorlist",
      (Client client, Vector2 cursorPos, string[] args) =>
  {
    ....
    GameMain.Server.SendTraitorMessage(
     client,
     string.Format("- Traitor {0} has no current objective.",            // <=
                   "",                                                   // <=
                   t.Character.Name),                                    // <=
     "",
     TraitorMessageType.Console);
  });
}

.NET 8

V3025 The 1st argument '"<ds.DataView.DataView|API> %d#, table=%d, RowState=%d{ds.DataViewRowState}\n"' is used as incorrect format string inside method. A different number of format items is expected while calling 'Trace' function. Arguments not used: 1st, 2nd, 3rd. DataView.cs 166, DataCommonEventSource.cs 45

internal DataView(....)
{
  ....
  DataCommonEventSource.Log.Trace("<ds.DataView.DataView|API> %d#, table=%d,
                                   RowState=%d{ds.DataViewRowState}\n",
                ObjectID, (table != null) ? table.ObjectID : 0, (int)RowState);
  ....
}

internal void Trace<T0, T1, T2>(string format, T0 arg0, T1 arg1, T2 arg2)
{
  if (!Log.IsEnabled()) return;
  Trace(string.Format(format, arg0, arg1, arg2));
}

.NET 8

V3025 Incorrect format. A different number of format items is expected while calling 'Write' function. Arguments not used: ClassName ?? "null". EHInfo.cs 135

public void WriteTo(TextWriter writer, int methodRva, bool dumpRva)
{
  ....
  switch (Flags & CorExceptionFlag.COR_ILEXCEPTION_CLAUSE_KIND_MASK)
  {
    case CorExceptionFlag.COR_ILEXCEPTION_CLAUSE_NONE:
      writer.Write($" CATCH: {0}", ClassName ?? "null");
      break;

    case CorExceptionFlag.COR_ILEXCEPTION_CLAUSE_FILTER:
      writer.Write($" FILTER (RVA {0:X4})",
                   ClassTokenOrFilterOffset + methodRva);
      break;
    ....
  }
  ....
}