I am currently working on a website that offers tutoring services and I have been stuck on this issue quite a while..
I have 2 text boxes where the user chooses a start date and a finish date, when the user clicks view he would be suppose to see the results in a gridview. I am using FormParameters to insert the date into the query.
SelectCommand of the sqldatasource
SelectCommand="SELECT [Session].Session_num AS Num, [Session].Session_Time_Stamp AS Session_Date, Student.Student_First & ' ' & Student.Student_Last AS Student FROM (([Session] INNER JOIN Student ON [Session].Student_Num = Student.Student_Num) INNER JOIN Class ON [Session].Class_ID = Class.Class_ID) WHERE ((([Session].Session_Time_Stamp) Between #firstdate And #seconddate))">
Parameters of the SqlDataSource
<SelectParameters>
<asp:FormParameter Name="firstdate" Type="DateTime"/>
<asp:FormParameter Name="seconddate" Type="DateTime"/>
</SelectParameters>
This is executed when the user clicks the view button, it is where I set the values of the parameters and execute the sql select.
Dim fdate As DateTime = Format(CDate(txtStartDate.Text), "MM/dd/yyyy")
Dim ldate As DateTime = Format(CDate(txtEndDate.Text), "MM/dd/yyyy")
gridTutor.SelectParameters("firstdate").DefaultValue = fdate
gridTutor.SelectParameters("seconddate").DefaultValue = ldate
gridTutor.Select(DataSourceSelectArguments.Empty)
gridTutorSessions.DataBind()
fdate and ldate are not empty, however after this is executed the query result is empty. Could it be that wrong methods to execute the select?
Edit: I realized the problem is probably with the query and DateTime format. When I transformed my textbox value to DateTime it put it like this #2/20/2014#. However, it doesn't return anything even if there are values between the two dates.
If anybody have an access query with DateTime I would like to see it. Thanks
I managed to fix it by formatting the date in my access database it's not the best solution but it is a fix for the situation
I believe you need to manually set fdate and ldate just before you do your 'selectparameters' (i.e. use "fdate = Format(CDate(txtStartDate.Text), "MM/dd/yyyy")". According to the following, values asigned to Dim in the manner you have would not reflect the realtime values you want. See the following regarding VB: "You can assign a value to a variable when it is created. For a value type, you use an initializer to supply an expression to be assigned to the variable. The expression must evaluate to a constant that can be calculated at compile time.
Related
The Variable fileName contains the name of two columns to fetch value of it, which is in the type of "email,address"
The output of the fileName variable is sam#gmail.com102streetN, which is what I need
but when I try to insert that value into another column table then it throws me an error
The multi-part identifier "sam#gmail.com102streetN" could not be bound.
I don't know how to fix it
for each a in idParase
strSQL = "Select Award, Year, ("&fileName&") as dynamicColumns FROM dbo.Awards_TABLE Where awardID = "&a&""
cmdCRProc.CommandText = strSQL
Set rsCR = cmdCRProc.Execute
nameParase = rsCR("dynamicColumns")
sql2 = "Insert Into dbo.Queue (Award,Year,awardID,FileName) Values ("&rsCR(0)&", "&rsCR(1)&", "&a&", "&nameParase&") "
cmdCRProc.CommandText = sql2
Set rsCR = cmdCRProc.Execute
next
I think this isn't going wrong in the INSERT, but in the SELECT.
If I write out your SELECT it would be something this I think (I don't know the value of "a", but let's say it's 2):
Select Award, Year, (sam#gmail.com102streetN) as dynamicColumns FROM dbo.Awards_TABLE Where awardID = 2
I very much doubt you have a column named 'sam#gmail.com102streetN', right?
I don't know what your goal is, but it seems like you're building a query with a dynamic column name that doesn't exist.
What you can do is Response.Write() your SQL statements and see what the result is. Then maybe run them in your database management tool to check what's going on:
Response.write(strSQL)
And
Response.write(sql2)
I want to filter the gridview by comparing a datetime column of type datetime in sql server with a date textbox.
The datetime column in sql server is being stored/displayed (as default) in the yyyy-mm-dd hh:mm:ss.sss format.
However the date textbox is in the format dd/mm/yyyy.
<asp:TextBox ID="date_tb" runat="server" TextMode="Date"></asp:TextBox>
I tried using
FilterExpression="CONVERT(VARCHAR, [ScheduledDateTime], 105) LIKE '%{0}%'">
but it didn't work.
FilterExpression="CONVERT([ScheduledDateTime], 'System.String', 105) LIKE '%{0}%'">
also did not work.
I then tried using
SelectCommand="SELECT [ScheduledDateTime], CONVERT(VARCHAR, [ScheduledDateTime], 105) as d ... FROM table1
FilterExpression="d LIKE '%{0}%'">
but it didn't work as well.
edit:
I have changed the ControlParameter into <asp:ControlParameter Name="ScheduledDateTime" ControlID="date_tb" PropertyName="Text" type="DateTime"/> so I no longer have to be concerned about the date format.
Although now there is a problem to comparing date with datetime.
This is what you can do
select * from MyTable where convert(varchar, a, 103) = '03/24/2013'
You probably don't want to compare date to the seconds. The right side of equasion comes from the textbox
If you want it really good, then do this
Dim sql as String = "select * from MyTable where convert(varchar, a, 103) = #1"
#1 is a parameter that you want to add to Command Object and it will have value of your textbox.
http://msdn.microsoft.com/en-us/library/ms187928.aspx
Use format 103 to convert a 'dd/mm/yyyy' string to a date. You are using 105, which is 'dd-mm-yyyy'
You should not need to do any string conversion to compare DateTimes in SQL. When you use LIKE, SQL will convert the DateTime into a string value and you need to make sure that you're using the same format on both ends. If your source data does not include any time component, then you should just be able to do:
FilterExpression="ScheduledDateTime = {0}"
If it does include time components and you want to truncate the time, you can try:
FilterExpression="dateadd(dd, datediff(dd,0, ScheduledDateTime ), 0) = {0}"
or
FilterExpression="ScheduledDateTime BETWEEN {0} AND dateadd(dd, 1, {0})"
I'm using DateDiff() function of ASP to find the date difference between two dates.
The Function works fine and displays the exact date difference between two dates but when it comes to insert this value in the database it takes 9 as the value irrespect of any date difference.
Suppose difference between two dates is more than 15 or 20 days, in the database it takes "9".
I have used INT as the DATA TYPE for the column where it displaying the date difference.
Is DATA TYPE creating an issue here?
I even tried using session variable to store the value but no luck - here's my code below:
if request.Form("sub") <> "" then
sql = "Select * from emp_leave_details"
rs.open sql , con, 1, 2
dim diff
dim todate
dim fromdate
fromdate= rs("leave_from")
todate= rs("leave_to")
session("date_diff")=datediff("d",fromdate,todate)
rs.addnew
rs("emp_name") = request.Form("name")
rs("emp_no") = request.Form("number")
rs("address") = request.Form("address")
rs("contact_no") = request.Form("contact")
rs("mobile_no") = request.Form("mobile")
rs("contact_onleave") = request.Form("contact_details")
rs("leave_type") = request.Form("rad")
rs("other_leave_details") = request.Form("PS")
rs("leave_from") = request.Form("from")
rs("leave_to") = request.Form("to")
rs("applied_by") = request.Form("apply")
rs("accepted_by") = request.Form("accept")
rs("approved_by") = request.Form("approve")
rs("no_of_leave_taken")= session("date_diff")
rs.update
response.Write("<script language='javascript'>{update();}</script>")
rs.close
end if
The datatype has nothing to do with this. Storing the value in the session is not the solution. You can use a regular variable.
From your code it looks like you always use the same values for fromdate and todate. This is because you do not iterate the rows in the resultset.
if not rs.bof and not rs.eof then
do while not rs.eof
'' code to execute for each row
rs.moveNext
loop
end if
In your current script rs will always return the results of the first row returned by the query.
The second problem your running into might be the Date datatype. Convert your value to a date using cDate and use this to calculate the difference.
Your problem is , you search for "Select * from emp_leave_details" which always gives all records from that table. You retrieve the values of the first record and do a diff of these, which results in always the same value, that is normal. From your question it is unclear what you really want to do. I suppose so want so select a record like
Select * from emp_leave_details where emp_name=<%=request.Form("name")%>
and based on that add a new record with a computed no_of_leave_taken.
Sorry guys my bad...
It was the database field name that I was calling instead of
fromdate= request.form("from")
todate= request.form("to")
I was calling this
fromdate= request.form("leave_from")
todate= request.form("leave_to")
Sorry again..but I really appreciate you all for providing me with all that possible solutions.
Thanks.
I'm having a problem with an expression in my sql statement in SQLite for Adobe AIR
basically I have this
sql = "UPDATE uniforms SET status=#status WHERE customerId IN(19,20)";
updateStmt.parameters["#status"] = args[1];
updateStmt.execute();
if I run the above code it works, updating the status when the id are 19 and 20
but if I pass the ids list as a parameter like this
sql = "UPDATE uniforms SET status=#status WHERE customerId IN(#ids)";
updateStmt.parameters["#status"] = args[1];
updateStmt.parameters["#ids"] = "19,20";
updateStmt.execute();
it gives me and error, saying could not convert text value to numeric value, which make sense because I'm passing and string but the IN expression should convert it accordingly, like it does when I pass directly the list values, why is not working the other way, thanks for any help!
Not sure but I think the problem is that your #ids parameter should be an array when using it like this. Try
updateStmt.parameters["#ids"] = new Array(19,20);
I have 3 drop down list having Date,Month ,Year.So when Updating I want this 3 Field to be a single Datafield in Sql Database. Iam using Asp.Net 2.0 Version(VB.Net).(Now these 3 Dropdown list values are saved as 3 Datafields in sql Database)
Why not use a date/time picker instead? It seems to me to be a better idea than your own triplet of day, month and year.
I take it you're using a SqlCommand for this? Here's some sample, non-compiling code which I'll whip up for you here:
Dim cmd as SqlCommand("update tableX set dt = #var where ID = 1");
cmd.Parameters.AddWithValue("#var", new DateTime(CInt(day.SelectedValue), CInt(month.SelectedValue, CInt(year.SelectedValue)));
cmd.ExecuteNonQuery();
Join up the values:
month + "/" + day + "/" + year
and use DateTime.Parse() or DateTime.TryParse() to convert them to a date. If you are concerned about the date format for your culture, pass in a CultureInfo object. Add your own validation as needed.
http://msdn.microsoft.com/en-us/library/1k1skd40.aspx
Not foolproof, but it might satisfy your requirement.