Object - ToDecimalOrDefault

An object extension method that converts this object to a decimal or default.

Try it

public static void Main()
{
	object val1 = 123;
    object val2 = "1,033.67";
	object thisInvalid = "A100";
	
	string format = "{0, -20} {1, -15}";
	
	Console.WriteLine(format, "Object", "ToDecimalOrDefault");
	Console.WriteLine(format, "------", "------------------");
	
	// C# Extension Method: Object - ToDecimalOrDefault
	Console.WriteLine(format, val1, val1.ToDecimalOrDefault());
	Console.WriteLine(format, val2, val2.ToDecimalOrDefault());
	Console.WriteLine(format, thisInvalid, thisInvalid.ToDecimalOrDefault());
	Console.WriteLine(format, thisInvalid, thisInvalid.ToDecimalOrDefault(0));
	Console.WriteLine(format, thisInvalid, thisInvalid.ToDecimalOrDefault(() => 0));
}

View Source
using System;

public static partial class Extensions
{
    /// <summary>
    ///     An object extension method that converts this object to a decimal or default.
    /// </summary>
    /// <param name="this">The @this to act on.</param>
    /// <returns>The given data converted to a decimal.</returns>
    public static decimal ToDecimalOrDefault(this object @this)
    {
        try
        {
            return Convert.ToDecimal(@this);
        }
        catch (Exception)
        {
            return default(decimal);
        }
    }

    /// <summary>
    ///     An object extension method that converts this object to a decimal or default.
    /// </summary>
    /// <param name="this">The @this to act on.</param>
    /// <param name="defaultValue">The default value.</param>
    /// <returns>The given data converted to a decimal.</returns>
    public static decimal ToDecimalOrDefault(this object @this, decimal defaultValue)
    {
        try
        {
            return Convert.ToDecimal(@this);
        }
        catch (Exception)
        {
            return defaultValue;
        }
    }

    /// <summary>
    /// An object extension method that converts this object to a decimal or default.
    /// </summary>
    /// <param name="this">The @this to act on.</param>
    /// <param name="defaultValue">The default value.</param>
    /// <param name="useDefaultIfNull">true to use default if null.</param>
    /// <returns>The given data converted to a decimal.</returns>
    public static decimal ToDecimalOrDefault(this object @this, decimal defaultValue, bool useDefaultIfNull)
    {
        if (useDefaultIfNull && @this == null)
        {
            return defaultValue;
        }

        try
        {
            return Convert.ToDecimal(@this);
        }
        catch (Exception)
        {
            return defaultValue;
        }
    }

    /// <summary>
    ///     An object extension method that converts this object to a decimal or default.
    /// </summary>
    /// <param name="this">The @this to act on.</param>
    /// <param name="defaultValueFactory">The default value factory.</param>
    /// <returns>The given data converted to a decimal.</returns>
    public static decimal ToDecimalOrDefault(this object @this, Func<decimal> defaultValueFactory)
    {
        try
        {
            return Convert.ToDecimal(@this);
        }
        catch (Exception)
        {
            return defaultValueFactory();
        }
    }

    /// <summary>
    /// An object extension method that converts this object to a decimal or default.
    /// </summary>
    /// <param name="this">The @this to act on.</param>
    /// <param name="defaultValueFactory">The default value factory.</param>
    /// <param name="useDefaultIfNull">true to use default if null.</param>
    /// <returns>The given data converted to a decimal.</returns>
    public static decimal ToDecimalOrDefault(this object @this, Func<decimal> defaultValueFactory, bool useDefaultIfNull)
    {
        if (useDefaultIfNull && @this == null)
        {
            return defaultValueFactory();
        }

        try
        {
            return Convert.ToDecimal(@this);
        }
        catch (Exception)
        {
            return defaultValueFactory();
        }
    }
}