カラムにNULL値を挿入できません '説明

Question

カラムにNULL値を挿入できません'説明...

誰か助けてもらえますか？してください、それは非常に高く評価されます.. 説明、数量、コスト、およびHSCodeを挿入する私の大まかなコードですが、Description Columeが列の説明にNULLを挿入することを言って動作していません。

public void CreateIncomingShipmentLine(IncomingShipmentLine incomingShipmentLine) 
{ 
    DbConnection _Connection = new SqlConnection(Constant.DatabaseConnection); 
    _Connection.Open(); 

    // IncomingShipmentLine 

    string myIncomingShipmentLineQuery = "INSERT INTO IncomingShipmentLine(Description, Quantity, Cost, HSCode) VALUES (@Description, @Quantity, @Cost, @HSCode)"; 

    _Connection.Execute(myIncomingShipmentLineQuery, new 
                { 
                 Description = incomingShipmentLine.Description, 
                 Quantity = incomingShipmentLine.Quantity, 
                 Cost = incomingShipmentLine.Cost, 
                 HSCode = incomingShipmentLine.HSCode 
                }); 
    _Connection.Close(); 
} 

Answer 1

挿入する前にISNULLプロパティを使用してください。

それはあなたのDescription coulmnがNOT NULL

あなた `Description`列がNULL値を許可しないと、あなたが実際に、このような価値を提供するように、この

public void CreateIncomingShipmentLine(IncomingShipmentLine incomingShipmentLine) 
{ 
    DbConnection _Connection = new SqlConnection(Constant.DatabaseConnection); 
    _Connection.Open(); 

    // IncomingShipmentLine 

    string myIncomingShipmentLineQuery = "INSERT INTO IncomingShipmentLine(Description, Quantity, Cost, HSCode) VALUES (ISNULL(@Description,''), @Quantity, @Cost, @HSCode)"; 

    _Connection.Execute(myIncomingShipmentLineQuery, new 
                { 
                 Description = incomingShipmentLine.Description, 
                 Quantity = incomingShipmentLine.Quantity, 
                 Cost = incomingShipmentLine.Cost, 
                 HSCode = incomingShipmentLine.HSCode 
                }); 
    _Connection.Close(); 
}