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C# 使用SQLite的SQLite net pcl库更新单行表中单个列的值的简单方法是什么?_C#_Sqlite_Xamarin - Fatal编程技术网

C# 使用SQLite的SQLite net pcl库更新单行表中单个列的值的简单方法是什么?

C# 使用SQLite的SQLite net pcl库更新单行表中单个列的值的简单方法是什么?,c#,sqlite,xamarin,C#,Sqlite,Xamarin,我正在使用SQLite的SQLite net pcl库,下面是我的表。我想知道的是,在创建表之后,如何将值更新为2 db2.CreateTable<Schema>(); db2.Insert(new Schema() { SchemaGuid = new Guid().ToString(), Version = 1 }); public class Schema { [PrimaryKey, NotNull] public string SchemaGuid {

我正在使用SQLite的SQLite net pcl库,下面是我的表。我想知道的是,在创建表之后,如何将值更新为2

db2.CreateTable<Schema>();
db2.Insert(new Schema() { SchemaGuid = new Guid().ToString(), Version = 1 });
public class Schema
{
    [PrimaryKey, NotNull]
    public string SchemaGuid   { get; set; }
    public int    Version      { get; set; }
}
var version = RunQuery<int>($"SELECT Version FROM Schema").FirstOrDefault();

您可以使用“UpdateAsync”使用相同的PrimaryKey更新版本值

插入记录:

db2.InsertAsync(new Schema() { ID = 1, SchemaGuid = new Guid().ToString(), Version = 0 });
更新:

您可以使用下面的代码检查列表中的所有记录:

db2.Table<Schema>().ToListAsync();
有关mroe的详细信息,您可以参考MS文档

db2.Table<Schema>().ToListAsync();