Get Datetime value and bind it in datagrid if datetime value is nulll

Question

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Hello Friends,

i have store procedure that retrieve date from database here is SP :-

SQL

public DataSet GetOrderList(int OrderID, DateTime OrderDate,  string OrderStatus)
    {
        Database db = new SqlDatabase(this.ConnectionString);
        using (DbCommand objcmd = db.GetStoredProcCommand("dbo.GetOrderList"))
        {
            if (OrderID == null)
                db.AddInParameter(objcmd, "@OrderID", DbType.Int32, DBNull.Value);
            else
                db.AddInParameter(objcmd, "@OrderID", DbType.Int32, OrderID);

            if (OrderDate == null)
                db.AddInParameter(objcmd, "@OrderDate", DbType.Date, DBNull.Value);
            else
                db.AddInParameter(objcmd, "@OrderDate", DbType.Date, OrderDate);

            if (OrderStatus == null)
                db.AddInParameter(objcmd, "@OrderStatus", DbType.String, DBNull.Value);
            else
                db.AddInParameter(objcmd, "@OrderStatus", DbType.String, OrderStatus);

            DataSet ds = db.ExecuteDataSet(objcmd);
            return ds;
        }
    }

now i bind data like that but :-

C#

private void BindData()
    {
        DateTime? dt = null;

        try
        {
            BindData(null, null, 0, null, null);
        }
        catch (Exception ex)
        {
            lblerror.Visible = true;
            lblerror.InnerText = ex.Message.ToString();
        }
    }

C#

private void BindData(string SortExpression, string SortDirection, int OrderID, DateTime OrderDate, string OrderStatus)
    {
            DatabaseHelper db = new DatabaseHelper();
            DataSet ds = db.GetOrderList(OrderID, OrderDate, OrderStatus);

            if (SortDirection != null && SortExpression != null)
            {
                DataView DView = new DataView(ds.Tables[0]);
                DView.Sort = SortExpression + " " + SortDirection;
                GrdOrder.DataSource = DView;
            }
            else
            {
                GrdOrder.DataSource = ds.Tables[0];
                GrdOrder.DataBind();
            }
     }

now what i pass when i datetime is null..
Any one other way to bind the data..with this arguments.

Thank You To All

Posted 26-Aug-12 23:38pm

Yatin chauhan

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Sandeep Mewara 27-Aug-12 7:19am

Not clear.

You say you bind the datetime field to grid when it is null? Does not make sense.
Your code shared too does not explain much.

Please use 'Improve Question' link and edit/update your question.

Yatin chauhan 27-Aug-12 8:33am

Thank You Sandeepsir for reply.
i found the problem and get the solution now its run correct.

Yatin chauhan 27-Aug-12 8:45am

here in my code DateTime? dt = null;
not allow null value so that is the problem.

2 solutions

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Christian Amado · Answer 1 · 2012-08-27T04:41:00

Solution 1

You can do something like this:

C#

DateTime dt = DateTime.MinValue;

You cannot set null values for DateTime.

Hope it helps.

Posted 27-Aug-12 4:41am

Christian Amado

Comments

Yatin chauhan 28-Aug-12 0:59am

Yes i set min value and check like that :-
if (OrderDate.Equals(DateTime.MinValue))
db.AddInParameter(objcmd, "@OrderDate", DbType.Date, DBNull.Value);
else
db.AddInParameter(objcmd, "@OrderDate", DbType.Date, OrderDate);

now its working fine..
Thank You Christian Amado

Sandeep Mewara · Answer 2 · 2012-08-27T18:42:00

Solution 2

OP resolved the issue by himself.

OP posted:
here in my code DateTime? dt = null; not allow null value so that is the problem.

Posted 27-Aug-12 18:42pm

Sandeep Mewara

Updated 27-Aug-12 18:43pm

v2

Comments

Yatin chauhan 28-Aug-12 0:59am

Thank You Sandeepsir Mewara