I've got the error:
INPUT STRING WAS NOT IN A CORRECT FORMAT
when running the code below.
So what do you think here is the error? How will I format the date in the DateTimePicker to store properly in MySQL database?
Here is my code (I included only the relevant code which I think is the error):
cmd.Parameters.AddWithValue("#Rdate", _order.dateTimePicker_Requested.Value.ToString("yyyy-MM-dd"));
cmd.Parameters.AddWithValue("#Ndate", _order.dateTimePicker_Needed.Value.ToString("yyyy-MM-dd"));
cmd.Parameters.AddWithValue("#CodeDate", Convert.ToDateTime(DateTime.Now).ToString("yyyy-MM-dd hh:mm:ss"));
Unless your MySQL columns are strings (which they shouldn't be), you should be passing actual dates as parameters.
Don't call .ToString().
You should set :
string.Format("{0:yyyy-MM-dd}", your_date);
Hope this helps!
If your variable represents datetime value then its no need to convert it to string it automatically mapped with MySQL column type and if it still not work then reply.
I will post with some code that will convert datetime to proper so that it would mapped with column.
Thank you.
Related
I tried to use
sqlDr.GetValue(a).ToString()
to display a DATE column from my database which looks like this..(the Date Submitted column)
But the problem is , when i display it using getValue(8).toString(), something like this is displayed..
Thanks for taking your time to read my post , any reply is much appreciated!
The problem is .Net does not have a Date-only primitive type. Therefore the Sql Server Date column type maps to a full DateTime value in .Net, which always includes a time component. If you don't provide a time component, the DateTime struct will have a 0-value time component, which maps to 12:00:00.000 AM.
To get around this, you need to specify the output format for your column, so that it explicitly does not include a time value. You want something like this:
((DateTime)getValue(8)).ToString("d")
However, the exact code you need will vary wildly depending on how your result table is created. If necessary, check the SqlDataReader.GetDataTypeName() function to know what type you're dealing with.
Try using the DateTime.ToShortTimeString Method ():
Console.WriteLine("Short date string: \"{0}\"\n", myDateTime.ToShortDateString());
Output: Short date string: "5/16/2001"
I have this 21/10/1999 value manually inserted into the SQL database and when I retrieve it like this:
txtDOB.Text = readPatient["pDOB"].ToString();
It displays everything along with the time 12:00:00 AM. My data type for my date column is date, not datetime. So why is it displays the time as well?
((DateTime)readPatient["pDOB"]).ToString("d");
For a list of supported formats see: http://msdn.microsoft.com/es-es/library/zdtaw1bw(v=vs.110).aspx
You may try
txtDOB.Text = Convert.ToDateTime(readPatient["pDOB"]).ToString("dd/MM/yyyy", CultureInfo.InvariantCulture);
Edit: Thanks to comments saw that forgot to cast to datetime
It looks like you got your answer on how to properly format the value to a string without the time portion. But, no one has answered your other question:
So why is it displays the time as well?
This is because of mappings between SQL and .NET. In .NET a SQL "date" is stored in a DateTime object which does have time as well. To see all mappings between SQL and .NET see this: SQL Server Data Type Mappings
you can try this
txtDOB.Text=Convert.toDateTime(readPatient["pDOB"]).ToString("d/MM/yyyy");
You can use the string format parameter of the ToString to achieve any format you like,
like this:
TextBox1.Text =Convert.toDateTime(readPatient["pDOB"]).ToString("d/MM/yyyy");
Click on the datetimepicker then go to properties. There you can format your datetimepicker. Change format to custom (there few selection there) then set custom (provided in the properties menu) table with yy-MM-dd,an
DateTime dt = Convert.ToDateTime(sqdr["invdate"].ToString());
dt.Date; //To get the date only
I am working on c# project and using winform.
Here the problem is the query was working previously but now it is not working
Here the todaydate is a datetimePicker which is set to short date format
and my datatype of column is smalldatetime the error i am getting is
The conversion of a nvarchar data type to a
smalldatetime data type resulted in an out-of-range value.
The statement has been terminated.
if i have two date time picker one for date and second for time then how can i insert? please can you guide me
AddWithValue determines the datatype of the parameter from the value you pass.
In your case you are passing a string and thus the parameter is passed to the database as a string not as a datetime expected by the database
you should change that line
cmd.Parameters.AddWithValue("#today", todaydate.Value);
You're currently passing in the text value, which means something else is having to then parse it as a date. Don't do that. Given that you've got a DateTimePicker, you should just use the DateTime value it provides:
cmd.Parameters.AddWithValue("#today", todaydate.Value);
... or create the parameter first with a specific type (SqlDbType.SmallDateTime), then set the value using todaydate.Value. The important point is to avoid the string conversion.
Wherever possible, you should avoid converting values into text. Keep them in their "natural" form (e.g. DateTime in this case) for as much of the time as possible: on input, parse into the natural form, and if you can avoid ever converting to a string, do so!
I think your time7 column in database is smalldatetime and you tried to assign it a string. I don't suggest it.
Try with Add() method like this;
command.Parameters.Add("#today", SqlDbType.SmallDatetime);
command.Parameters["#today"].Value = todaydate.Value;
or you can use AddWithValue() as also like this;
cmd.Parameters.AddWithValue("#today", todaydate.Value);
I've got a table with a column "date-taken TIMESTAMP", but I'm not sure on what format SQLite is expecting. How would I need to format "5/3/1999 10:30 PM" before I can insert it into the column above?
Also, how do parameterized queries help with formatting things like this?
SQLite doesn't have an actual date/time type, it simply uses strings. Valid date/time string formats can be found here, in the "Time Strings" section:
http://www.sqlite.org/lang_datefunc.html
As for the second question, I'm not sure there's anything you can do with paramaters to help here. You'd probably want to just write a function that converts from your expected format to an SQLite format.
I am using a MySQL database with DbLinq, but there is an exception being thrown:
"Cannot convert mysql datetime to
system.datetime"
How can I resolve this issue?
Check for any zero date means date like '0000-00-00' in database;
this could be the cause of error.
Either cast the MySqlDateTime as a DateTime or use mySqlDateTime.GetDateTime().
Well, if you have a result set containing MySql DateTime values, you could use the ConvertAll method along with a delegate using DateTime.Parse to create a collection of System.DateTime values.
Here's an example, where "results" is the result of your dblinq query containing MySQL datetime values:
List<DateTime> dateTimes = results.ConvertAll(delegate(string time){
return DateTime.Parse(time);
});
Is this what you're looking for?
I was moving a column in my gridview from asp:BoundField to asp:TemplateField so had to display a date from a MySQL database explicitly. I found, through reflection, that the collection typed the date fields as MySqlDateTime and not system.DateTime.
I added the import MySql.Data.Types statement to the code behind and the following Eval statement within a label in the context of a gridview.
Text='<%# CType(Eval("Submitted_Date"), MySql.Data.Types.MySqlDateTime).ToString%>'
output format: 02/23/2011
Hope that helps!