Question

Here is my aspx.cs Code behind Class I am Setting properties and set correctly

Here is my getter/setter properties I get properties in SQL insert see below query

以下是将表单发布到SQL Server 2012数据库的VoucherSubmit方法：

public class InsertData
{
    public void VoucherSubmit()
    {
        myconection mycon = new myconection();
        VoucherForm vr = new VoucherForm();

        string Query1 = "insert into Voucher(VrType,VrDate,CreatedBy,CreationDate,SubmittedBy,SubmittedDate,ApprovedBy,ApprovedDate,Method,BillNo,ChequeNo,DemandNo,Branch,AccountDebit,AccountCredit,Debit,Credit,Description)values('" + vr.getvouchertype() + "','" + vr._date + "','" + vr._createdby + "','" + vr.getvoucher_creationdate() + "','" + vr._submittedby + "','" + vr._submitteddate + "','" + vr._approvedby + "','" + vr._approveddate + "','" + vr._method + "','" + vr._billno + "','" + vr._chequeno + "','" + vr._demandno + "','" + vr._branch + "','" + vr._accountdebit + "','" + vr._accountcredit + "','" + vr._debit + "','" + vr._credit + "','" + vr._description + "')";

        SqlCommand cmd = new SqlCommand(Query1, mycon.GetConnection());
        cmd.ExecuteNonQuery();
        mycon.GetConnection().Close();
    }
}

Answer 1

您没有传递已初始化的VoucherForm，而是在VoucherSubmit方法中创建新的。{/ p>

public void btn_save_Click(object sender, EventArgs e)
{
     // All the stuff you have there just change single line
     insert.VoucherSubmit(vf);
}

public void VoucherSubmit(VoucherForm vf)
{
    myconection mycon = new myconection();
    // remove VoucherForm vf = new VoucherForm();
    string Query1 = "insert into Voucher(VrType,VrDate,CreatedBy,CreationDate,SubmittedBy,SubmittedDate,ApprovedBy,ApprovedDate,Method,BillNo,ChequeNo,DemandNo,Branch,AccountDebit,AccountCredit,Debit,Credit,Description)values(@VrType,@VrDate,@CreatedBy,@CreationDate,@SubmittedBy,@SubmittedDate,@ApprovedBy,@ApprovedDate,@Method,@BillNo,@ChequeNo,@DemandNo,@Branch,@AccountDebit,@AccountCredit,@Debit,@Credit,@Description)";
    SqlCommand cmd = new SqlCommand(Query1, mycon.GetConnection());

    cmd.InsertCommand.Parameters.Add("@VrTyp").Value = vr.getvouchertype();
    cmd.InsertCommand.Parameters.Add("@VrDate").Value = vr._date;
    cmd.InsertCommand.Parameters.Add("@CreatedBy").Value = vr._createdby;
    cmd.InsertCommand.Parameters.Add("@CreationDate").Value = vr.getvoucher_creationdate();
    cmd.InsertCommand.Parameters.Add("@SubmittedBy").Value = vr._submittedby;
    cmd.InsertCommand.Parameters.Add("@SubmittedDate").Value = vr._submitteddate;
    cmd.InsertCommand.Parameters.Add("@ApprovedBy").Value = vr._approvedby;
    cmd.InsertCommand.Parameters.Add("@ApprovedDate").Value = vr._approveddate;
    cmd.InsertCommand.Parameters.Add("@Method").Value = vr._method;
    cmd.InsertCommand.Parameters.Add("@BillNo").Value = vr._billno;
    cmd.InsertCommand.Parameters.Add("@ChequeNo").Value = vr._chequeno;
    cmd.InsertCommand.Parameters.Add("@DemandNo").Value = vr._demandno;
    cmd.InsertCommand.Parameters.Add("@Branch").Value = vr._branch;
    cmd.InsertCommand.Parameters.Add("@AccountDebit").Value = vr._accountdebit;
    cmd.InsertCommand.Parameters.Add("@AccountCredit").Value = vr._accountcredit;
    cmd.InsertCommand.Parameters.Add("@Debit").Value = vr._debit;
    cmd.InsertCommand.Parameters.Add("@Credit").Value = vr._credit;
    cmd.InsertCommand.Parameters.Add("@Description").Value = vr._description;

    cmd.ExecuteNonQuery();
    mycon.GetConnection().Close();
}

<强>更新

注释中的

Dan Guzman建议使用指定sql数据类型的重载来避免性能问题。

我引用的文章的主要观点是SqlDbType 应该在案例中明确指定最大长度 varchar列。例如，
cmd.Parameters.Add("@VrDate",
SqlDbType.DateTime).Value = DateTime.ParseExact(vr._date,
"yyyy-MM-dd", null);
这将确保所需的数据类型传递并避免SQL Server中过多的缓存计划。

感谢您的更新！

SQL Server在Int列中存储0值，在String中存储空值，并在日期存储中存储如2001-01-01

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