C# 概括对象初始化的更好方法？

我有以下代码来概括许多非常相似的对象的初始化。我概括了c代码（如下所示）。有人知道更好的方法吗？这还不算太糟，但仍然涉及一些复制/粘贴，我希望避免这种情况

private Tuple<SqlCommand, SqlCommand, SqlCommand, SqlCommand, SqlDataAdapter> initializeCommandsFor (string type) {
    SqlCommand selectCommand;
    SqlCommand insertCommand;
    SqlCommand updateCommand;
    SqlCommand deleteCommand;
    SqlDataAdapter dataAdapter;

    selectCommand = new SqlCommand("Get" + type + "Data", cntn);
    selectCommand.CommandType = CommandType.StoredProcedure;

    insertCommand = new SqlCommand("Insert" + type, cntn);
    insertCommand.CommandType = CommandType.StoredProcedure;

    updateCommand = new SqlCommand("Update" + type, cntn);
    updateCommand.CommandType = CommandType.StoredProcedure;

    deleteCommand = new SqlCommand("Delete" + type, cntn);
    deleteCommand.CommandType = CommandType.StoredProcedure;

    cntn.Open();
    SqlCommandBuilder.DeriveParameters(selectCommand);
    cntn.Close();

    dataAdapter = new SqlDataAdapter(selectCommand);
    dataAdapter.InsertCommand = insertCommand;
    dataAdapter.UpdateCommand = updateCommand;
    dataAdapter.DeleteCommand = deleteCommand;

    return Tuple.Create(selectCommand, insertCommand, updateCommand, deleteCommand, dataAdapter);
}

private void customerCommands () {
    var commands = initializeCommandsFor("Customer");
    customerSelectCommand = commands.Item1;
    customerInsertCommand = commands.Item2;
    customerUpdateCommand = commands.Item3;
    customerDeleteCommand = commands.Item4;
    customerDataAdapter = commands.Item5;
}

private void competitorCommands () {
    var commands = initializeCommandsFor("Competitor");
    competitorSelectCommand = commands.Item1;
    competitorInsertCommand = commands.Item2;
    competitorUpdateCommand = commands.Item3;
    competitorDeleteCommand = commands.Item4;
    competitorDataAdapter = commands.Item5;
}

private Tuple initializeCommand（字符串类型）{
SqlCommand选择命令；
sqlcommandinsertcommand；
SqlCommand-updateCommand；
SqlCommand删除命令；
SqlDataAdapter；
selectCommand=newSQLCommand（“获取”+类型+“数据”，cntn）；
选择Command.CommandType=CommandType.StoredProcess；
insertCommand=newsqlcommand（“插入”+类型，cntn）；
insertCommand.CommandType=CommandType.StoredProcess；
updateCommand=新的SqlCommand（“更新”+类型，cntn）；
updateCommand.CommandType=CommandType.StoredProcess；
deleteCommand=新的SqlCommand（“删除”+类型，cntn）；
deleteCommand.CommandType=CommandType.StoredProcess；
cntn.Open（）；
派生参数（selectCommand）；
cntn.Close（）；
dataAdapter=新的SqlDataAdapter（selectCommand）；
dataAdapter.InsertCommand=InsertCommand；
dataAdapter.UpdateCommand=UpdateCommand；
dataAdapter.DeleteCommand=DeleteCommand；
返回Tuple.Create（selectCommand、insertCommand、updateCommand、deleteCommand、dataAdapter）；
}
私有无效客户命令（）{
var commands=initializeCommandsFor（“客户”）；
customerSelectCommand=commands.Item1；
customerInsertCommand=commands.Item2；
customerUpdateCommand=commands.Item3；
customerDeleteCommand=commands.Item4；
customerDataAdapter=commands.Item5；
}
私人无效竞争对手命令（）{
var commands=initializeCommandsFor（“竞争对手”）；
competitorSelectCommand=commands.Item1；
competitorInsertCommand=commands.Item2；
competitorUpdateCommand=commands.Item3；
competitorDeleteCommand=commands.Item4；
competitorDataAdapter=commands.Item5；
}

我将创建如下扩展方法：

public static class SqlDataAdapterExtension
{
    public static void InitializeCommandsFor(this SqlDataAdapter adapter, string type)
    {
        SqlCommand selectCommand;
        SqlCommand insertCommand;
        SqlCommand updateCommand;
        SqlCommand deleteCommand;
        SqlDataAdapter dataAdapter;

        adapter.SelectCommand = new SqlCommand("Get" + type + "Data", cntn);
        adapter.SelectCommand.CommandType = CommandType.StoredProcedure;

        adapter.InsertCommand = new SqlCommand("Insert" + type, cntn);
        adapter.InsertCommand.CommandType = CommandType.StoredProcedure;

        adapter.UpdateCommand = new SqlCommand("Update" + type, cntn);
        adapter.UpdateCommand.CommandType = CommandType.StoredProcedure;

        adapter.DeleteCommand = new SqlCommand("Delete" + type, cntn);
        adapter.DeleteCommand.CommandType = CommandType.StoredProcedure;

        cntn.Open();
        SqlCommandBuilder.DeriveParameters(adapter.SelectCommand);
        cntn.Close();
    }
}

var adapter = new SqlDataAdapter();
adapter.InitializeCommandsFor("Customer");
// Now the select, update, delete and insert commands are in your adapter

然后像这样使用它：

public static class SqlDataAdapterExtension
{
    public static void InitializeCommandsFor(this SqlDataAdapter adapter, string type)
    {
        SqlCommand selectCommand;
        SqlCommand insertCommand;
        SqlCommand updateCommand;
        SqlCommand deleteCommand;
        SqlDataAdapter dataAdapter;

        adapter.SelectCommand = new SqlCommand("Get" + type + "Data", cntn);
        adapter.SelectCommand.CommandType = CommandType.StoredProcedure;

        adapter.InsertCommand = new SqlCommand("Insert" + type, cntn);
        adapter.InsertCommand.CommandType = CommandType.StoredProcedure;

        adapter.UpdateCommand = new SqlCommand("Update" + type, cntn);
        adapter.UpdateCommand.CommandType = CommandType.StoredProcedure;

        adapter.DeleteCommand = new SqlCommand("Delete" + type, cntn);
        adapter.DeleteCommand.CommandType = CommandType.StoredProcedure;

        cntn.Open();
        SqlCommandBuilder.DeriveParameters(adapter.SelectCommand);
        cntn.Close();
    }
}

var adapter = new SqlDataAdapter();
adapter.InitializeCommandsFor("Customer");
// Now the select, update, delete and insert commands are in your adapter

根据.NET约定，我还将方法的名称更改为使用驼峰大小写表示法

---

如果您在另一个名称空间中创建扩展类，请确保通过使用语句导入该名称空间。

既然可以从中获取所有命令，为什么不返回DataAdapter？生成的sql命令不是最基本的sql命令吗？比如说，如果你需要的不仅仅是显而易见的更新/插入/删除，那么生成的就没有什么价值了？我不是说生成的，我是说你创建的（例如，

dataAdapter.InsertCommand=InsertCommand；

您只需返回您创建并获取分配给它的命令的

dataAdapter

。哦，我现在看到了XD，这很有意义。不过，我需要保留别名，以至少用于选择命令。。。