diff --git a/src/System.Windows.Forms.DataVisualization/Utilities/ValueConverter.cs b/src/System.Windows.Forms.DataVisualization/Utilities/ValueConverter.cs
index 08de8112..1266632b 100644
--- a/src/System.Windows.Forms.DataVisualization/Utilities/ValueConverter.cs
+++ b/src/System.Windows.Forms.DataVisualization/Utilities/ValueConverter.cs
@@ -12,157 +12,160 @@
 
 using System.Globalization;
 
-namespace System.Windows.Forms.DataVisualization.Charting.Utilities
+namespace System.Windows.Forms.DataVisualization.Charting.Utilities;
+
+/// <summary>
+/// ValueConverter class is used when numeric or DateTime 
+/// value needs to be converted to a string using specified format.
+/// </summary>
+internal static class ValueConverter
 {
+    #region Methods
+
     /// <summary>
-    /// ValueConverter class is used when numeric or DateTime 
-    /// value needs to be converted to a string using specified format.
+    /// Converts value to string using specified format.
     /// </summary>
-    internal static class ValueConverter
-	{
-		#region Methods
-
-        /// <summary>
-        /// Converts value to string using specified format.
-        /// </summary>
-        /// <param name="chart">Reference to the chart object.</param>
-        /// <param name="obj">Reference to the object being formatted.</param>
-        /// <param name="objTag">Additional object tag.</param>
-        /// <param name="value">Value converted to string.</param>
-        /// <param name="format">Format string.</param>
-        /// <param name="valueType">Value type.</param>
-        /// <param name="elementType">Chart element type being formatted.</param>
-		public static string FormatValue(
-			Chart chart,
-			object obj,
-            object objTag,
-			double value, 
-			string format, 
-			ChartValueType valueType,
-			ChartElementType elementType)
-		{
-            format ??= string.Empty;
-            string	convertionFormat = format;
-			string	result = string.Empty;
-
-			// Make sure value index is part of the format
-			if(convertionFormat != null && convertionFormat.Length > 0)
-			{
-				int	bracketIndex = convertionFormat.IndexOf('{', 0);
-				if(bracketIndex >= 0)
-				{
-					while(bracketIndex >= 0)
-					{
-						// If format is not followed by the value index
-						if(!convertionFormat[bracketIndex..].StartsWith("{0:", StringComparison.Ordinal))
-						{
-							// Check character prior to the bracket
-							if(bracketIndex >= 1 && convertionFormat.Substring(bracketIndex - 1, 1) == "{")
-							{
-								continue;
-							}
-							else
-							{
-								// Insert value index in format
-								convertionFormat = convertionFormat.Insert(bracketIndex + 1, "0:");
-							}
-						}
-
-						bracketIndex = convertionFormat.IndexOf('{', bracketIndex + 1);
-					}
-				}
-				else
-				{
-					convertionFormat = "{0:" + convertionFormat + "}";
-				}
-			}
-
-			// Date/time formating
-            if (valueType == ChartValueType.DateTime || 
-                valueType == ChartValueType.DateTimeOffset || 
-                valueType == ChartValueType.Date)
-			{
-				// Set default format
-				if(convertionFormat.Length == 0)
-				{
-					convertionFormat = "{0:d}";
-                    if (valueType == ChartValueType.DateTimeOffset)
-                        convertionFormat += " +0";
-				}
-
-				// Convert date to string
-                result = String.Format(CultureInfo.CurrentCulture, convertionFormat, DateTime.FromOADate(value));
-			}
-			else if(valueType == ChartValueType.Time)
-			{
-				// Set default format
-				if(convertionFormat.Length == 0)
-				{
-					convertionFormat = "{0:t}";
-				}
-
-				// Convert date to string
-                result = String.Format(CultureInfo.CurrentCulture, convertionFormat, DateTime.FromOADate(value));
-			}
-			else
-			{
-				bool	failedFlag = false;
-
-				// Set default format
-				if(convertionFormat.Length == 0)
-				{
-					convertionFormat = "{0:G}";
-				}
-
-				try
-				{
-					// Numeric value formatting
-                    result = String.Format(CultureInfo.CurrentCulture,convertionFormat, value);
-				}
-				catch(FormatException)
-				{
-					failedFlag = true;
-				}
-
-				// If numeric formatting failed try to format using decimal number
-				if(failedFlag)
-				{
-					failedFlag = false;
-                    try
-                    {
-                        // Decimal value formatting
-                        result = String.Format(CultureInfo.CurrentCulture, convertionFormat, (long)value);
-                    }
-                    catch (ArgumentNullException)
-                    {
-                        failedFlag = true;
-                    }
-                    catch (FormatException)
+    /// <param name="chart">Reference to the chart object.</param>
+    /// <param name="obj">Reference to the object being formatted.</param>
+    /// <param name="objTag">Additional object tag.</param>
+    /// <param name="value">Value converted to string.</param>
+    /// <param name="format">Format string.</param>
+    /// <param name="valueType">Value type.</param>
+    /// <param name="elementType">Chart element type being formatted.</param>
+    public static string FormatValue(
+        Chart chart,
+        object obj,
+    object objTag,
+        double value,
+        string format,
+        ChartValueType valueType,
+        ChartElementType elementType)
+    {
+        format ??= string.Empty;
+        string convertionFormat = format;
+        string result = string.Empty;
+
+        // Make sure value index is part of the format
+        if (convertionFormat != null && convertionFormat.Length > 0)
+        {
+            int bracketIndex = convertionFormat.IndexOf('{', 0);
+            if (bracketIndex >= 0)
+            {
+                while (bracketIndex >= 0)
+                {
+                    // If format is not followed by the value index
+                    if (!convertionFormat[bracketIndex..].StartsWith("{0:", StringComparison.Ordinal))
                     {
-                        failedFlag = true;
+                        // Check character prior to the bracket
+                        if (bracketIndex >= 1 && convertionFormat.Substring(bracketIndex - 1, 1) == "{")
+                        {
+                            continue;
+                        }
+                        else
+                        {
+                            // Insert value index in format
+                            convertionFormat = convertionFormat.Insert(bracketIndex + 1, "0:");
+                        }
                     }
-				}
-
-				// Return format string as result (literal) if all formatting methods failed
-				if(failedFlag)
-				{
-                    result = format;
-				}
-			}
-
-            // For the Reporting Services chart a special number formatting
-            // handler may be set and used for all formatting needs.
-            if (chart != null)
+
+                    bracketIndex = convertionFormat.IndexOf('{', bracketIndex + 1);
+                }
+            }
+            else
+            {
+                convertionFormat = "{0:" + convertionFormat + "}";
+            }
+        }
+
+        // Date/time formating
+        if (valueType == ChartValueType.DateTime ||
+            valueType == ChartValueType.DateTimeOffset ||
+            valueType == ChartValueType.Date)
+        {
+            // Set default format
+            if (convertionFormat.Length == 0)
+            {
+                convertionFormat = "{0:d}";
+                if (valueType == ChartValueType.DateTimeOffset)
+                    convertionFormat += " +0";
+            }
+
+            // Convert date to string
+            result = string.Format(CultureInfo.CurrentCulture, convertionFormat, DateTime.FromOADate(value));
+        }
+        else if (valueType == ChartValueType.Time)
+        {
+            // Set default format
+            if (convertionFormat.Length == 0)
             {
-                // Call number formatter
-                FormatNumberEventArgs eventArguments = new FormatNumberEventArgs(value, format, valueType, result, objTag, elementType);
-                chart.CallOnFormatNumber(obj, eventArguments);
-                result = eventArguments.LocalizedValue;
+                convertionFormat = "{0:t}";
             }
 
-			return result;
-		}
-	
-		#endregion
-	}
+            // Convert date to string
+            result = string.Format(CultureInfo.CurrentCulture, convertionFormat, DateTime.FromOADate(value));
+        }
+        else
+        {
+            bool failedFlag = false;
+
+            // Set default format
+            if (convertionFormat.Length == 0)
+            {
+                convertionFormat = "{0:G}";
+            }
+
+            try
+            {
+                // Numeric value formatting
+                // Workaround for "-0" label due to Floating-Point parsing changes in .NET Core 3. See https://devblogs.microsoft.com/dotnet/floating-point-parsing-and-formatting-improvements-in-net-core-3-0/
+                if (value == 0d && double.IsNegative(value))
+                    result = string.Format(CultureInfo.CurrentCulture, convertionFormat, 0d);
+                else
+                    result = string.Format(CultureInfo.CurrentCulture, convertionFormat, value);
+            }
+            catch (FormatException)
+            {
+                failedFlag = true;
+            }
+
+            // If numeric formatting failed try to format using decimal number
+            if (failedFlag)
+            {
+                failedFlag = false;
+                try
+                {
+                    // Decimal value formatting
+                    result = string.Format(CultureInfo.CurrentCulture, convertionFormat, (long)value);
+                }
+                catch (ArgumentNullException)
+                {
+                    failedFlag = true;
+                }
+                catch (FormatException)
+                {
+                    failedFlag = true;
+                }
+            }
+
+            // Return format string as result (literal) if all formatting methods failed
+            if (failedFlag)
+            {
+                result = format;
+            }
+        }
+
+        // For the Reporting Services chart a special number formatting
+        // handler may be set and used for all formatting needs.
+        if (chart != null)
+        {
+            // Call number formatter
+            FormatNumberEventArgs eventArguments = new FormatNumberEventArgs(value, format, valueType, result, objTag, elementType);
+            chart.CallOnFormatNumber(obj, eventArguments);
+            result = eventArguments.LocalizedValue;
+        }
+
+        return result;
+    }
+
+    #endregion
 }