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api_v1/Appointment.Entity/ValidateAttribute/StringRequiredAttribute.cs

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+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Appointment.Entity.ValidateAttribute
+{
+    /// <summary>
+    /// 必填项
+    /// </summary>
+    /// <remarks>
+    /// Add:yuangb 2019-3-11
+    /// [StringRequired(ErrorMessage ="状态不能为空")]
+    /// </remarks>
+    public class StringRequiredAttribute : ValidateAttribute
+    {
+        /// <summary>
+        /// 报错提示信息
+        /// </summary>
+        public string ErrorMessage { get; set; }
+
+        public override string Validate(object oValue)
+        {
+            if (oValue == null || string.IsNullOrWhiteSpace(oValue.ToString()))
+            {
+                return ErrorMessage;
+            }
+            else
+            {
+                return null;
+            }
+        }
+    }
+}