how to get a particular column values from ms access/database using wpf?

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hello friends,

here i did in my project "REMAINDER" event, so if the remainder date is today means it should display in a label which i wrote in below code.

please help me out how to retrive and match the todays date with remainders date on a particular username.

C#

public void rdisplay()
            {
               
                cmdd = new OleDbCommand("select * from Remainder where [rusername]='" + loginusername + "'", conn);
                conn.Open();
                cmdd.ExecuteNonQuery();
                OleDbDataAdapter da = new OleDbDataAdapter(cmdd);

                da.Fill(ds); 
                

                conn.Close();


   [here its getting error in below var rrow and string remdate  please help me !]
   
             var rrow = ds.Tables[0].Select("[date]");
                string remdate = dt.Rows[0]["date"].ToString();


                DateTime now = DateTime.Now;
                string rnow = "dd/MM/yyyy";
                var rvar = (now.ToString(rnow));

                string rnow2 = "MM/dd/yyyy";
                var rvar2 = (now.ToString(rnow2));
                if (remdate == rvar)
                {
                    lblremdisplay.Content = "Remainder :-" + dt.Rows[0]["your remainder"].ToString() + "";
                }
                else if (remdate == rvar2)
                {
                    lblremdisplay.Content = "Remainder :-" + dt.Rows[0]["your remainder"].ToString() + "";
                }
                else
                {
                    lblremdisplay.Content = "";
                }

thank u .

Posted 1-Apr-14 2:42am

Mr.VJ

Updated 1-Apr-14 2:52am

v2

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Maciej Los · Answer 1 · 2014-04-01T05:43:00

Solution 1

If you would like to fetch values from database for any particular day, your OleDbCommand should looks like:

C#

cmdd = new OleDbCommand("select * from Remainder where [remainderdate]=#" + @yourdate + "#", conn);

Where @yourdate is today in iso format: MM/dd/yyyy

For today, use:

SQL

select *
from Remainder
where [remainderdate]=#Date()#

Date() function[^]

For set of dates:

SQL

select *
from Remainder
where [remainderdate] BETWEEN #03/01/2014# AND #04/01/2014#

BETWEEN ... AND ...[^]

Posted 1-Apr-14 5:43am

Maciej Los

Comments

Mr.VJ 2-Apr-14 1:59am

thank u for reply Maciej Los

i did like this

cmdd = new OleDbCommand("select [date]='"+present date+"' from Remainder where [rusername]='" + loginusername + "' ", conn);
conn.Open();
cmdd.ExecuteNonQuery();
OleDbDataAdapter da = new OleDbDataAdapter(cmdd);

//da .Fill(ds);
da.Fill(dt);

conn.Close();

string remdate = dt.Rows[0]["date"].ToString();//but here getting error like date column does belongs to table.

Maciej Los 2-Apr-14 2:05am

Replace:
dt.Rows[0]["date"].ToString();
with:
dt.Rows[0].ToString();

Maciej Los 2-Apr-14 2:08am

BTW: Access has got a list of reserved words. One of them is Date. Please see: http://support.microsoft.com/kb/286335/en