我如何从数据库中删除所有数据并使用 Microsoft.SqlServer.Management.Smo 插入新数据；

Question

Now i use only this options

ScriptingOptions options = new ScriptingOptions();
options.ScriptSchema = false;
options.ScriptData = true;
options.ScriptForCreateDrop = true;
options.WithDependencies = true;

but i get output sript with only

INSERT [t].[Table] ([f], [f1], [f2], [f3], [f4], [f5], [f6]) VALUES (N'SomeData', N'SomeData', N'SomeData', N'SomeData', CAST(N'SomeData' AS DateTime2), CAST(N'SomeData' AS DateTime2), NULL)

but i want get DELETE ACTION before INSERT

DELETE FROM [t].[Table]

INSERT [t].[Table] ([f], [f1]) VALUES (N'SomeData', N'SomeData')

How i can do it? Help pls

UPD: I just use other options and save result into another virable

ScriptingOptions optionsForClearData = new ScriptingOptions();
            optionsForClearData.ScriptSchema = false;
            optionsForClearData.ScriptData = true;
            optionsForClearData.ScriptForCreateDrop = true;
            optionsForClearData.ScriptDrops = true;

that code give me result StringCollections with values DELETE FROM [t].[table] Than i just put it into one big string and save it like .sql rollback file using this part of code

            var tt = new StringCollection();
            var s = new List<string>();
            foreach (var tbl in Tables.Reverse())
            {
                s.AddRange(dbs.Tables[tbl].EnumScript(optionsForClearData));
            }
            foreach (var tbl in Tables)
            {
                s.AddRange(dbs.Tables[tbl].EnumScript(options));
            }
            tt.AddRange(s.ToArray());
            MemoryStream ms = new MemoryStream();
            TextWriter tw = new StreamWriter(ms);

            var text = new string[tt.Count];
            tt.CopyTo(text, 0);
            tw.Write(string.Join("\n",text));
            tw.Flush();
            ms.Position = 0;
            return new FormFile(ms, 0, ms.Length, "backup", 
            FileName+".sql");

PS: Yes i know about i missed "using" with streams (RAW CODE)

Answer 1

You shouldn't use a management library for CRUD to a db. You need to be sending validated queries or invoking stored procedures through a data provider

I would recommend Dapper which was built by Stack Overflow themselves. Very performant (I believe its only a pinch slower than ADO.NET which is pretty amazing), reduces a lot of ADO.NET boilerplate, and you have as much fine tuned control as you want as you can write your own queries

Alternatively, for a low/no-code option there is also Entity Framework . Not as performant, but very feature rich for sure.

If you don't want any external libraries, as I mentioned ADO .NET is a bit more writing but is very fast