SQL Server :: Read Last 20 Record Of A Column In C# Code?
Oct 3, 2010i want to read last 20 record of a column in c# code
View 2 Repliesi want to read last 20 record of a column in c# code
View 2 Repliesi open a sqldatasource for binding on listview.
I would like also to read a field on first record for print it.
How can i access to my sqldatasource from code behind ?
how to read last 20 record form a table for example (tb1) and the table consist of 3 column
View 4 RepliesI have a table that contain 1000 record and a webpage that contain 10 label to show the data in table and tow linkbutton for showing (next-previous) records. I want a query when i click on next show next 10 record and when i click on previous show previous 10 record (code in c# if possible)
View 3 Repliesbest way to read millions of record from sql server database.i have tried dataset but the performance is not good
View 5 RepliesI want to read from database where I've stored a image in binary field and display a image.
while (reader.Read())
{
byte[] imgarr = (byte[])reader["file"];
Stream s = new MemoryStream(imgarr);
System.Drawing.Image image = System.Drawing.Image.FromStream(s);
Graphics g = Graphics.FromImage(image);
g.DrawImage(image, new Point(400, 10));
image.Save(Response.OutputStream, ImageFormat.Jpeg);
g.Dispose();
image.Dispose();
}
con.Close();
This piece of code doesn't work:
System.Drawing.Image image = System.Drawing.Image.FromStream(s);
I tried the code from this article. And I got the same mistake " the parameter is not valid ". Maybe I'm not aware of something, some setting in sql server or webconfig or sth else. Anyone else who has experience from fetching images from database? The parameter is not valid is the error message. db table contains data. What am I doing wrong?
I am creating a BLOG and Forum, and am using tags similar to this and most other sites, I just need to know how to retrieve the tags from a culmn if the tags are stored with commas separating them, I am sure I read about it somewhere but was unable to find it.so the column would be:
tag1, tag2, tag3, etc.....
I would need to be able to:
1. Store tags, and add-on to tags already in the column
2. retrieve the tags as a list, or separately
I am developing a asp.net application and i am using SQL Server 2008. I took a IDENTITY column as Record_ID for detail table where i will have trillions of records per year. So just want to ask whats the largest number record id (identity) column can hold and in ASP.NET which data type i should use to handle record id as i am using this id as a reference to update the table data. I don't want to end up being trapped some day.
View 1 Repliesis it possible to get the last record from .read()?
View 2 RepliesI web application is in asp.net with Access databasesome times my application giving this error message "Could not read the record; currently locked by another user." or "Could not update; currently locked."I am using IDbConnection and IDbTransaction object.
View 2 Replieshow to use update using ADO.NET dataadapters.
View 2 Repliesi need to start reading a recordset starting from a specific record using SQL. For example: i've 10 records in my msaccess table and i'd like starting read it from record number 6 till the EOF.
View 4 RepliesIm using enterprise Manager data access code block and have a table in sql server 2005 with a column type of 'bigint'
when querying against this table and adding in a parameter, there isnt a long datatype available, so is Int32 an equivalent ?
[Code].....
I have been able to successfully read a row of data from an SQL table using two column parameters. Now I would like to update this row with new information. Is this possible since the reader does not specify which row was read with the 'reader.Read();' command?
View 7 RepliesI have created a Details View and set some of the fields to read only. I have added the edit command which is allowing me to edit all of the fields that are not set to read only but when I press the update button all the infomation stored in the readomly fields gets deleted and just show up as blank is there a way to stop them from getting deleted.
View 1 RepliesI want to read complete column from the dataset using select command or whatever without looping the rows of the table.Because in table i got 35000 records i only want to read a one complete column from the top to the end using dataset.
Eg: select column_name from table.
lly, dataset.tables[0].select["Column='Product'"]
I have tried with this but throwing exception.
I have read the excel in asp.net. I am using OledbDatareader for read the column name.
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Now my problem is the "date" field. If Excel sheet having column name "Date" then i got the error. i could not use the Column index because its also not fix. How can i ignore the upper case charactors in column name ?
I Get this stupid error when I try to update one of my products.Can some tell me why and how I remove the error?
Error:
Column 'CategoryName' is read only
http://img88.imageshack.us/img88/9123/errorscreenp.jpg
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Get column value from record in database
im trying to read column names from excel .
View 3 RepliesI am trying to get the identity column on which the record is inserted but i couldn't using stored procedure
see
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My Code Using ASP.NET C# i am trying to display the identity in textbox
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Is there a way I can automatically update a 'Date' column in my database table to the current date whenever any cell in that record is updated?I've started looking into table triggers a little bit and I'm wondering whether I can do it using this?
View 1 RepliesI have an orders table with a column names orderID. What I want to do is insert a new record and get the value from the new orderID column. The orderID is my Primary key. The Insert SQL I have now is -
INSERT INTO orders
(creditAutorizarionNumber, OrderName, OrderPersonPhone, OrderPersonEmail)
VALUES (@creditAutorizarionNumber,@OrderName,@OrderPersonPhone,@OrderPersonEmail)
How do I write the query to get the newly entered orderID ?
I need a way to read all the rows in one column from an Excel file that the user picks from a fileupload control. I tried saving the excel file on the webserver with the upload control and then opening it with a OleDbConnection but that fails when running it from the webserver and gives the error:
Request for the permission of type 'System.Data.OleDb.OleDbPermission, System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.
This works fine when just running it localhost, so i figured it might be a problem with security level at the webserver which i cant change. Instead i tried doing it with a streamreader direct from the fileupload control and because theres no need for saving the excel file on the server, but im not sure how to query the rows i need this way.
i have textbox1 and textbox2 and 8 checkboxes in my ASP.NET (VB.NET) webform. i want to retrieve the seats on the particular dates means if i enter 11/12/2010 in textbox1 then in textbox2 the output would be from seat_select column, let say (1,2,3) where date would be 11/12/2010 If i enter 13/12/2010 in textbox1 then in textbox2 the output would be 1,2
View 3 Replies