From 77537a6634a942fb02a889f2f0b1fd620c771cd1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E9=99=88=E5=9B=BD=E4=BC=9F?= <366193849@qq.com>
Date: Tue, 23 Nov 2021 12:01:20 +0800
Subject: [PATCH] empty=>default T

---
 FastGithub.Configuration/ValueBinder.cs | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/FastGithub.Configuration/ValueBinder.cs b/FastGithub.Configuration/ValueBinder.cs
index 0ab0169..4e14778 100644
--- a/FastGithub.Configuration/ValueBinder.cs
+++ b/FastGithub.Configuration/ValueBinder.cs
@@ -69,9 +69,18 @@ namespace FastGithub.Configuration
 
             public override object? ConvertFrom(ITypeDescriptorContext? context, CultureInfo? culture, object value)
             {
-                return value is string stringVal && binders.TryGetValue(typeof(T), out var binder)
-                    ? binder.Read(stringVal)
-                    : base.ConvertFrom(context, culture, value);
+                if (value is string stringVal)
+                {
+                    if (stringVal.Equals(string.Empty))
+                    {
+                        return default(T);
+                    }
+                    else if (binders.TryGetValue(typeof(T), out var binder))
+                    {
+                        return binder.Read(stringVal);
+                    }
+                }
+                return base.ConvertFrom(context, culture, value);
             }
 
             public override object? ConvertTo(ITypeDescriptorContext? context, CultureInfo? culture, object? value, Type destinationType)