添加了数据库相关了类，和枚举类型相关的类，并且将枚举类型绑定到前段

Data/Entities/DbDataVariable.cs

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+using PMSWPF.Enums;
+using SqlSugar;
+using SqlSugar.DbConvert;
+
+namespace PMSWPF.Data.Entities;
+[SugarTable("DataVariable")]
+public class DbDataVariable
+{
+    [SugarColumn(IsPrimaryKey = true, IsIdentity = true)]//数据库是自增才配自增 
+    public int  Id { get; set; }
+    [SugarColumn(IsNullable = true)]
+    public int ?VariableTableId { get; set; }
+    [Navigate(NavigateType.ManyToOne, nameof(DbDataVariable.VariableTableId))]
+    public DbVariableTable? VariableTable { get; set; }
+    public string Name { get; set; }
+    [SugarColumn(IsNullable = true)]
+    public string? Description { get; set; }
+    public string NodeId { get; set; }
+    [SugarColumn(ColumnDataType="varchar(20)",SqlParameterDbType=typeof(EnumToStringConvert))]
+    public ProtocolType ProtocolType { get; set; }
+    public string DataType { get; set; }
+    [SugarColumn(IsNullable = true)]
+    public List<DbMqtt>? Mqtts { get; set; }
+    public string DataValue { get; set; }
+    public string DisplayValue { get; set; }
+    public DateTime UpdateTime { get; set; }
+    [SugarColumn(IsNullable = true)]
+    public DbUser? UpdateUser { get; set; }
+    public string Converstion { get; set; }
+    public bool IsDeleted { get; set; }
+    public bool IsActive { get; set; }  
+    public bool IsSave { get; set; }
+    public Double SaveRange  { get; set; }
+    public bool IsAlarm { get; set; }
+    public Double AlarmMin { get; set; }
+    public Double AlarmMax { get; set; }
+    [SugarColumn(ColumnDataType="varchar(20)",SqlParameterDbType=typeof(EnumToStringConvert))]
+    public SignalType SignalType { get; set; }
+    
+}