支持对输入提示，不支持enum和bool类型的提示 dotnetcore#167

src/Magicodes.ExporterAndImporter.Core/ImporterHeaderAttribute.cs

@@ -66,5 +66,11 @@ public class ImporterHeaderAttribute : Attribute
         /// <remarks>对于Excel数据验证，仅用于生成导入模板特性中，作为限制用户对Excel模板数据的约束性</remarks>
         /// </summary>
         public bool IsInterValidation { get; set; }
+
+        /// <summary>
+        ///    选定单元格时，显示输入的信息
+        /// <remarks>仅在IsInterValidation启用的情况下</remarks>
+        /// </summary>
+        public string ShowInputMessage { get; set; }
     }
 }

src/Magicodes.ExporterAndImporter.Excel/Utility/ImportHelper.cs

@@ -794,7 +794,7 @@ protected virtual void StructureExcel(ExcelPackage excelPackage)
                 {
                     var range = ExcelCellBase.GetAddress(ExcelImporterSettings.HeaderRowIndex + 1, i + 1,
                         ExcelPackage.MaxRows, i + 1);
-                    SetInterValidation(worksheet, ImporterHeaderInfos[i].PropertyInfo, range);
+                    SetInterValidation(worksheet, ImporterHeaderInfos[i].PropertyInfo, range, ImporterHeaderInfos[i].Header.ShowInputMessage);
                 }
             }
 
@@ -818,9 +818,10 @@ protected virtual void StructureExcel(ExcelPackage excelPackage)
         /// <param name="worksheet"></param>
         /// <param name="propertyInfo"></param>
         /// <param name="address"></param>
+        /// <param name="showInputMessage"></param>
         /// <remarks>在ResourceType为空的情况下，默认会选择属性本身的类型去做相应的处理
         /// </remarks>
-        private void SetInterValidation(ExcelWorksheet worksheet, PropertyInfo propertyInfo, string address)
+        private void SetInterValidation(ExcelWorksheet worksheet, PropertyInfo propertyInfo, string address, string showInputMessage)
         {
             //MaxLength属性和MinLength属性可以去控制对指定列的大小
             //StringLength属允许去指定小长度和最大长度,和max和min有有些类似，不过仅对string类型生效
@@ -878,6 +879,12 @@ private void SetInterValidation(ExcelWorksheet worksheet, PropertyInfo propertyI
                 textLengthValidation.Formula.Value = Convert.ToInt32(formulaVal);
                 textLengthValidation.Formula2.Value = Convert.ToInt32(formula2Val);
                 textLengthValidation.ShowErrorMessage = true;
+
+                if (!showInputMessage.IsNullOrWhiteSpace())
+                {
+                    textLengthValidation.ShowInputMessage = true;
+                    textLengthValidation.Prompt = showInputMessage;
+                }
             }
             else if (range != null)
             {
@@ -890,6 +897,12 @@ private void SetInterValidation(ExcelWorksheet worksheet, PropertyInfo propertyI
                     intValidation.Formula2.Value = Convert.ToInt32(formula2Val);
                     intValidation.Error = errorMsg;
                     intValidation.ShowErrorMessage = true;
+
+                    if (!showInputMessage.IsNullOrWhiteSpace())
+                    {
+                        intValidation.ShowInputMessage = true;
+                        intValidation.Prompt = showInputMessage;
+                    }
                 }
                 else if (type == typeof(DateTime))
                 {
@@ -899,8 +912,25 @@ private void SetInterValidation(ExcelWorksheet worksheet, PropertyInfo propertyI
                     dateTimeValidation.Operator = dataValidationOperator;
                     dateTimeValidation.Formula.Value = Convert.ToDateTime(formulaVal);
                     dateTimeValidation.Formula2.Value = Convert.ToDateTime(formula2Val);
+
+                    if (!showInputMessage.IsNullOrWhiteSpace())
+                    {
+                        dateTimeValidation.ShowInputMessage = true;
+                        dateTimeValidation.Prompt = showInputMessage;
+                    }
                 }
             }
+            else
+            {
+                if (!showInputMessage.IsNullOrWhiteSpace())
+                {
+                    //如果仅启用数据验证属性，没有对数据大小的校验，则判断是否存在输入提示信息,enum和bool不支持
+                    var anyValidation = worksheet.DataValidations.AddAnyValidation(address);
+                    anyValidation.ShowInputMessage = true;
+                    anyValidation.Prompt = showInputMessage;
+                }
+
+            }
         }
 
         /// <summary>

src/Magicodes.ExporterAndImporter.Tests/ExcelImporter_Tests.cs

@@ -22,6 +22,7 @@
 using Shouldly;
 using System;
 using System.Collections.Generic;
+using System.Data;
 using System.IO;
 using System.Linq;
 using System.Threading.Tasks;
@@ -117,7 +118,6 @@ public async Task GenerateTemplate_Test()
             var result = await Importer.GenerateTemplate<ImportProductDto>(filePath);
             result.ShouldNotBeNull();
             File.Exists(filePath).ShouldBeTrue();
-
             //TODO:读取Excel检查表头和格式
         }
 

src/Magicodes.ExporterAndImporter.Tests/Models/Import/GenerateStudentImportSheetDataValidationDto.cs

@@ -49,7 +49,7 @@ public class GenerateStudentImportSheetDataValidationDto
         [Range(minimum: 18, maximum: 20, ErrorMessage = "年龄范围需要在18-20岁哦", ErrorMessageResourceType = typeof(string))]
         public int IgnoreType { get; set; }
 
-        [ImporterHeader(Name = "出生日期", IsInterValidation = true)]
+        [ImporterHeader(Name = "出生日期", IsInterValidation = true, ShowInputMessage = "输入日期")]
         [Range(typeof(DateTime), minimum: "2020-10-20", maximum: "2020-10-24", ErrorMessage = "日期范围超出了哦")]
         public DateTime Birthday { get; set; }
 
@@ -64,7 +64,6 @@ public class GenerateStudentImportSheetDataValidationDto
         /// <summary>
         ///     性别
         /// </summary>
-        [ImporterHeader(Name = "性别")]
         [Required(ErrorMessage = "性别不能为空")]
         [ValueMapping("男", 0)]
         [ValueMapping("女", 1)]
@@ -110,8 +109,7 @@ public class GenerateStudentImportSheetDataValidationDto
         /// <summary>
         ///     QQ
         /// </summary>
-        [ImporterHeader(Name = "QQ号")]
-        [MaxLength(30, ErrorMessage = "QQ号字数超出最大限制,请修改!")]
+        [ImporterHeader(Name = "QQ号", IsInterValidation = true, ShowInputMessage = "性别列")]
         public string QQ { get; set; }
 
         /// <summary>