I want to reformat one column in database. So that I've used strong typed dataset by drag and drop in VS 2008. When I've already updated all data in dataset, I call method update() of table adapter to perform update my modified data of dataset into database. But it doesn't work.
Below is my code
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The RemoveWhiteSpace(string input) is my function to remove special characters from dataset.
I'm fairly new to asp.net and I'm trying get my arms around the data entry and update. I have created a nice data entry formusing a stored procedure. It works well but for a test database, it's pretty much overkill, but worthwell in learning how. I'm going through the ADO.NET quick start tutorial and I've ran across a couple of questions that I've not be able to answer. In my website,I'm wanting to edit the database by creating a separate form that is filled with the existing database information for that particular id. My main question is how to I take the information from the dataset and get it into my form. The code below is not fillingmy form. Not sure what I should be using here:
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I have a code something like this :
MyLinqDBDatacontext db = new MyLinqDBDatacontext();
var taskname= db.my_stored_proc_get_taskName(int taskId);
gridview.datasource= taskname;
gridview.databind();
this works fine
but i when i am using LINQ it gives me result in the form ISingleResult so can anyone tell me how to get a dataset from a girdview after assigning data to gridview
I need a functionality something like :
Dataset ds= new Dataset();
ds="Here i want a dataset converted from a gridview"
I select few columns from table A in dataset. Example "EMP_ID","Name","Address","Phone_Number". I want to save data in this dataset into some other table B.
I want to save data from dataset into table B. But i want to have following functionality
1. Before saving a record from dataset to table B if that record if previously present in table B, if yes then check if any value are different, if yes then update that record with the record from dataset, if all the values are same then leave the records as is.
2. If the record is not present in table B then insert it new records in table B from dataset.
Is there any efficient way to implement in .NET C#.
My dataset table data is from multiple tables (showing on a gridview),How to update the database tables using batch udpate on clicking submit, if the data is from a signle table, no problem, but I am not sure how to handle if the datais from mulitiple tables? If I have related tables, do I need put them in differet tables in the dataset?
View 6 Repliesi want to update the data of a database through a gridview update button
how can i attach a dataconvertion like this
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Im Inserting data into database table with the help of datasets but its not inserting to table and even its not showing errors.
this is my code....
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I have written a website in ASP.NET with a back-end database using SQL Express 2008. My database is created and put in the App_Data folder. It is ok when it runs on my local machine. However, when I upload to the web server, I got the error: An attempt to attach an auto-named database for file C:Documents and ettingsDesktopProject2_ISAM5337App_DataEvent.mdf failed. A database with the same name exists, or specified file cannot be opened, or it is located on UNC share. By the way, I notice a same probelm : When I move my project to a location which is different from specific path for my database, I got the same error message .
View 1 RepliesHow can i save the datatble back to my database?
First i selected some rows from database then using adp.Fill(DT) i filled datatable then i closed connection.
Then i made changes in this datatable in some rows & now i wonder how can i send this rows back to database?
NOTE:-i modified my datatble using FOR loop .and i set cells to someother values like dt.rows[2][2]="anything i want";
How to retrieve the data from the session (Dataset) and save it into a database
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Im trying to update my DB(DataBase) by using SQL UPDATE query ,but its not updating in the dataBase i receive confirmation(in testLabel) that one row is affected(dataReader = query.ExecuteReader(); return numbers of rows affected)...
I have given a HTML editortext control on a page,which generates HTML (i have to store it in my DB,that page is only for Admin) ,on pressing Update button , im receving in my testLabel that one row is affected(which shows DB is updated succesfully) but when i check my DB its in old state,it is not updating...
Here is my Event handler of Update Button which have to make updates in DB:
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I am looking to retrieve data from a database and assign those values to class objects which in turn will be turned into session variables. I am using an object datasource to retrieve the data from the database but I cannot find anywhere that shows how to assign these values to variables. The data is returned in a dataset. There is the added problem that there will be mulitple items returned which will have to be assigned to different arraylists of objects based on the a primary key in the database.
View 4 RepliesHow to update database with dataset
View 4 RepliesCreating a system with web front end and SQL backend (microsoft obviously). I have tried using the asp.netsqlprovider but i can;t as i am only allowed one database on the server, so i then tried to update my current database with the triggers to input the schema into the already existing database.Next step i create my own table with two simple fields of username and password and try and authenticate that way, i can't get that to work either.
I ahve limited permissions on the network as i am a University Student. I really don't know what to do. Never had to create a log on system before and i thought it would be far simpler than this. I ahve used Microsoft's sqlprovider schema before and it worked fine. I have also authenticated via IIS and AD too before. I can't do any of those two in this instance it seems.I need an alternative for logging in users, if needs be in can be crude. I also still need to have some kind of two different views too for logged in users and not logged in users, but that can change if needs must.Don't let me down people, haha. Think this posts in the correct place, i could not find another one i thought could be more relevant.
I need to use caching in my project. The problem is that, When page is firstly load ı cached a dataset. Then after after I update or insert a new record in table. my dataset returns from the cached records.
View 2 RepliesToday I am facing the problem with Typed DataSet using DataSet.XSd file, And How to fetch, Delete and Update the Database through Dataset.xsd file.
View 9 Repliesi am trying to update the database for a simple bank project. I am updating the current balance of an account. What i did was read the current balance first then add the deposited amount and then trying to update it to the database. here is the code
protected void Button1_Click(object sender, EventArgs e)
{
SqlConnection newSqlConnection = new SqlConnection();
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how do i copy required row in dataset to a new dataset. i have bind a xml into a dataset and i need to display say row 3 to 5 only so i do a for loop but i have encounter problem when trying to copy the rows to a new dataset.
do i have to write the xml to datatable and bind it to dataset and from there copy over ?
I am beginner to sql database and asp.net.I want to fetch datetime from sql database and display it in textbox.I have wrote one stored procedure.The Procedure is
declare @o_Output varchar(30)
SET @o_Output =
getdate()
select @o_Output
Using the above procedure i'm getting current date and time.but my problem is i am hitting ql database while page loading itself. if i am hitting db on 12.40pm means, the textbox showing always the sametime only. I am trying to insert or update some data's into db that time only, i am hitting the db.The textbox datetime(12.50pm) has been changed that time alone. i want to update datetime to textbox at every minutes or seconds.
i have function writeToDatabase(); that function use to store registration information to database. and then after store todatabase success..another page will appear and need user to confirm all data that has been filled...then with the confirmation..all data will send to HOST. what about if send data to database success..and send data to host FAIL(any reason due to send to host fail) ... i just think about to cancel anything that function writeToDatabase() did..
View 1 RepliesI have a table with Id, Name,...IsActive, etc. If user wants to delete a record from the user, he/she should update the field IsActive to false. I am able to acheive this functionality using the below steps,
1. Query the database for the row which is to be updated.
2. Update the property IsActive to false.
3. Submit the changes to the database.
This way i am successful. But i have a query here is that, when we execute steps 1 and 3, there will be two trips to the database for getting the required object and again updating the same object to the database.
Is this not a performance hit having multiple calls to DB for a simple operation.?
Do we have any other go, where in within a single call to database, can i update a field of row?
i am using a gridview which shows the data and a select column. when the user selects a record a detailsview is shown with the respective details and an edit button inside it. when the user clicks on the edit button the entire detailsview becomes editable and the user can now edit the selected record .here the problem starts cause when the user clicks on the update button there is an error stating that illegal variable/number or parameter not found.i am using sqldatasource to bind the gridview and detailsview with an unique RequestId fieldwhich detailsview sql datasource uses to bind the record uniquely.
View 3 RepliesI have the following code to update values in my database.
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I have a detailsview, template as follows:
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Codebehind: creating dataset, getting data from sql with adaptor and filling into dataset object, then setting detailsview's datasource.
I add 2 button to above template to able to edit data at asp page, and added event handlers:buttons:
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My question is, what to do inside the detailsview update event function to able to edit and update data. My method can be wrong too.
I'm attempting to create a update form that will pull information from my database. I'm a little confused on how to get the information into the textboxes on my form. First I have my form:
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This is where I'm getting stuck. I'm not certain what code I need or if what I have is correct. Is there an example what my next step(s) are? I would think that I need to set a variable to hold the data, maybe something like txtRace = Trim(GetString(0)???