DataSource Controls :: Update Form Filled With Database?
Apr 2, 2010
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:
[Code]....
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)???
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Jun 2, 2010
I have confusion, how can i retrieve value from database and show it in dropdownlist because valuse is store in various field with some are blank means null value, I want to display only fields with some have data . i am doing like this but what to mention in "valuefield and textfield" and how to implement.
con.Open();
OleDbCommand cmd1 = new OleDbCommand("select Restaurant,Parking,Facilities_for_Disabled,Room_Service,Bar_Pub,Fitness_Center_Gym,Swimming_Pool,Spa,Conferen
[code]...
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Apr 19, 2010
i want to update the data of a database through a gridview update button
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[Code]....
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Jul 6, 2010
[code]....
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:
[Code]....
[Code]....
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Jan 22, 2010
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Jan 9, 2010
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protected void Button1_Click(object sender, EventArgs e)
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[code]...
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Feb 25, 2010
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Apr 22, 2010
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</connectionStrings>
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Feb 10, 2010
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
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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.
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Jun 16, 2010
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..
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Apr 1, 2010
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:
[Code]....
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Apr 23, 2010
I 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,
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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?
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Jan 14, 2010
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.
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Feb 17, 2010
I have the following code to update values in my database.
[Code]....
[Code]....
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Jan 29, 2010
I've used below code for inserting textbox values on button click....then back the page again, if i update the textbox value , I want the corrosponding values of the database table also updated..
SqlConnection dbConn = new SqlConnection();
SqlCommand cmd = new SqlCommand();
dbConn.ConnectionString = ConfigurationManager.ConnectionStrings["Acarin_SchoolManagementConnectionString"].ToString();
if (dbConn.State != ConnectionState.Open)
dbConn.Open();
cmd.Connection = dbConn;
cmd.CommandType = CommandType.StoredProcedure;
cmd.CommandText = "sproc_Ins_Student_Details";
cmd.Parameters.Clear();
cmd.Parameters.AddWithValue("@StreetName", txtstreet.Text);
cmd.Parameters.AddWithValue("@Email_Id", txtemailaddress.Text);
cmd.Parameters.AddWithValue("@WebSiteUrl", txtwebpage.Text);
cmd.Parameters.AddWithValue("@HouseType", txthousetype.Text);
cmd.Parameters.AddWithValue("@HouseNo", txthouseno.Text);
cmd.Parameters.AddWithValue("@City", txtcity.Text);
cmd.ExecuteNonQuery();
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Jan 23, 2010
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
[Code]....
The RemoveWhiteSpace(string input) is my function to remove special characters from dataset.
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Jan 21, 2010
my database does not update when i pass edited values from textboxes, which is kind of weird. I even try using vb class file to receive the values. but it just never do so.
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Feb 9, 2012
i want to save form filled user's data and then want to save that html into pdf with same html look
pdf on the server
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Feb 8, 2010
This is a very common error as evidenced but the very large number of problems and suggested solutions on the web. I finally got around it last week but can't remember what was the step that did it. At that time, I was building a web application rather than a web site. Is that the difference? As you can see, it is no longer in the APP_DATA folder and is named membership.mdf rather than aspnetdb.mdf. I ran aspnet_regsql.exe to create it and actually had it working and was updating it successfully. But for other reasons, I had to scrap the application and decided to re-create it from scratch as a web site rather than a web application. I had been using Visual Studio 2008 to build the web application but am now using Visual Web Developer 2008 Express Edition to build the web site. Unfortunately, the Visual Studio application will no longer open so I can't verify that the web application still works. Can anybody help? (Please!!!) BTW, ASPNET and NETWORK SERVICE both have full control over the membership.mdf.
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Feb 1, 2010
I have been in the process of updating my code with security methods, and I've been learning this from [URL] (or "Security Guidelines: ASP.NET 2.0"). In the middle of the page under "When Constructing SQL Queries, Use Type Safe SQL Parameters" it says "Use type safe parameters when constructing SQL queries to avoid possible SQL injection attacks that can occur with unfiltered input". Now, what they suggested was to use code like:
"DataSet userDataset = new DataSet();
SqlDataAdapter myCommand = new SqlDataAdapter(LoginStoredProcedure", connection);
myCommand.SelectCommand.CommandType = CommandType.StoredProcedure;
myCommand.SelectCommand.Parameters.Add("@au_id", SqlDbType.VarChar, 11);........"
But, I was already using code like:
"var dataSource = (SqlDataSource)form1.FindControl("sqlDataSource5") ;
dataSource.UpdateParameters.Add("someVal", val);"
So now, to use type safe parameters, I decided to include it like:
"var dataSource = (SqlDataSource)form1.FindControl("sqlDataSource5") ;
dataSource.UpdateParameters.Add("@someVal", DbType.Int16, val);
dataSource.UpdateParameters["@someVal"].Size = 1;"
So, that would be how I would modify my current code base to use type safe parameters in sql updating/inserting.
Getting to my actual question, as it was said "Use type safe parameters when constructing SQL queries to avoid possible SQL injection attacks that can occur with unfiltered input". First off, this suggests that this should apply to unfiltered input. Also, in their example they only did this for an ID.
So, what I'd like to know, when it comes to "unfiltered input", does this mean as long as the input is unfiltered I must use type safe parameters, or even filtered input shall have this (just to be sure), like, input that has been ran through a regularexpression check? Shall I do this for all values I insert/update into the database, or just IDs and important things?
The way I see it right now is that it would be a good precaution to just do type safe checks on everything (literally) that updates/inserts into the database just to be extra safe. But, I really am unsure if this is really the best idea, because if I did, would this possibly cause overprocessing of information? Can this cause too much strain on server resources? If my fears serve true, what would be a good suggestion of how I could implement this properly without having to worry about what I said?
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May 19, 2010
I build a webpage to edit the data entry, all the textbox wroks fine. However when I update the value originally took in using dropdown list , I get error and couldn't get correct update.
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Feb 22, 2010
I am doing update query to edit my records and save to my database...I am getting the query expression exception...syntax error (missing operator) in query expression 'WebLogin=krish'.
string strUserName = Request.QueryString["UserName"].ToString();
DateTime dateTimeNow = DateTime.Now;
string ConnString = ConfigurationManager.ConnectionStrings["Data"].ConnectionString;[code]....
I am getting the exception syntax error (missing operator) in query expression 'WebLogin=krish'.
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Jan 11, 2010
I have this working on another project I have but cannot figure out why I can't get it to work on another. I have a dropdownlist box with employee names. When an employee is selected, I display the data (address, phone, email, etc.) in a series of textboxes. User can make changes and then click on an "Update" button where I attempt to update the database with the changes using the sqldatasource. The code works without any errors, but the database does not update.
Here's the sqldatasource code (the code behind follows):
[Code]....
Code Behind for the "Update" button control which was intended to update the database with sqldatasource3.update() command at the end:
[Code]....
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