Forms Data Controls :: Database Is Updated The Updation Must Be Availabe To All The Users Automatically
Jul 29, 2010
Lets take an example of online ticket booking system. Many users could be booking the tickets at any point of time. a GridView displays the list of Allotted and Free seats If a seat gets booked, this information must get updated in all the opened pages in user's browser. User need not require to refresh the page to see if a seat is booked or not Should i put GridView in update panel and keep looking into the databse constantly ??? This could turn out to be a heavy work if databse is too large any other alternative?? or should i stick with the above approach....?
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Nov 8, 2010
My previous impression of RequiredFieldValidator and similar have been that they show you an error label and set Page.IsValid false and that is it. Meaning they leave the rest of the task (preventing the use of wrong input data) to you. But today I have realised say if you use a DetailsView to insert a new record to a database, and you use validators to check the TextBoxes inside the DetailsView, they automatically prevent the database from being updated.
I would like to know how this is implemented behind the scene. I'm guessing it aborted the Page Lifecycle at Validator.PreRender event, so that database connections at later stage could not be reached? I'm probably wrong. I'm trying to use Reflector to get inside the RequiredFieldValidator to see how it is implemented, but I don't really know where to look.
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Feb 15, 2011
i want to compare my database value with my new updated value. what should i do ? e.g : on page load i am excuting one procedure which bring 10 columns and fill it against the 10 fields using for loop on the page. then i am changing value of two columns. ok. when i press update button then there is one more procedure which updates all the new and old columns into database. Its working fine. just i want to know that, should i update only two columns(which are modified) insted of updating all 10 columns ? Is there any csharp code that brings my page load columns into array and then compare it with new ones and updates only those columns which are mismatch with array. i am not sure but there is some way to do this.
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Apr 3, 2010
how to reflects the updated values to the database when i changed values in the Grid view in asp...
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Jan 15, 2012
I have a gridview with a select command.. When user selects a row.. I need to populate 4 dropdownlists with the values in gridview, dropdownlist which are also populated at page load event...
Though there is value in the dropdownlist when i try to update it selects 0th value.. Since while updating i use drptask.selectedvalue.tostring() since i am saving int values in database
It stores value as 0 in database..
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Jun 14, 2010
I have GridView with no data source. That I have persisted in memory.When editing row, I have fetch data to ModalPopup. When I edit data on ModalPopup using button click, how to find row index?I mean, how to find which row has been updated?
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Feb 24, 2011
I have 3 tables and I need to display ListBox and need to have facility for add/update facility. Here are the tables
Table 1 - PROJECT
Table 2- PROJECT_PRODUCTS
Table 3 - PRODUCTS
Now I have to Display PROJECT table for creating/editing and while doing it I would like to display ListBox(MultiSelect) for Products and I would like to know how can I implement this for editing?
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Mar 6, 2011
I'm currently working on a small project and therefore created a gridview, including one bit column which has been linked with a checkbox in both the itemtemplate as the edititemtemplate (autopostback = true).Databinding for these two checkboxes has been linked (two-way) to the bit column.Now I want to display the gridview to end-users. They should be able to just click on the checkbox so they value in the database column gets changed as well (as I want to run update queries behind it), but not passing via the command column 'EDIT'.=> problem I'm having now is that the bit column in the database doesn't get updated.
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Jan 3, 2012
i have popup on my webform with name and email id submit button,So when u click on submit button the name n email is entered into SQLSERVER database.As user click on submit a verification link should be sent to him table named "SUBSCRIBE" in database having columns :Name, Email, Date Time,Validated,ValidationEmailSent,Validation code.where name n email will come from as user entered....but others has to b generated. where
validation=if clicked on link den 1 otherwise 0;
validation Email = if email id is proper value is 1 not proper value should be 0;
validation code is ramdom no;
values of this 3 columns will b updated in database as per user response. How to write code for this problem as i have never used database sql server???
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Nov 12, 2013
I have used the same steps that you have used on your sample for inserting, deleting and updating. This is my code
private String strConnString = ConfigurationManager.ConnectionStrings["CustomerConnectionString2"].ConnectionString;
protected void Page_Load(object sender, EventArgs e) {
if (!IsPostBack) {
BindData();
[Code] ....
It is deleting the data but not updating the data,it sticks to the same data after clicking on the update button...
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Dec 27, 2012
I want to create B'day schedule ...as per birthdate i wnt to send sms ...by using asp.net.......how cna i do ds..?
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Aug 4, 2010
I just realized after i created a test account i was not in any roles. Is there a way to automically add new users into the role Users? Have i missed this some where?
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Aug 11, 2010
I met some problem with the below code, it seems the gridview can not be updated automatically unless I press the fress botton of the web brower,
[Code]....
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Jan 2, 2013
I want to take first Full backup of my database then Differential backup of database automatically on a fixed interval of time and save it into my files of system. After that i want to upload these files on server. when uploading is successful then i want to delete these files from the system. If backup of database is failed then a mail should go to the related person. How i will do it.
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May 7, 2015
need to save autonatically after 10 am.
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Nov 27, 2013
How to automatically refresh a page after some time interval?
In my website, I want to automatically refresh the page data(from database) after some time interval. I dont want to use any button click event to update the page data.
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Jan 8, 2011
i have a web application with sql server 2008 i wanna know if its possible to load the data automatically after its been inserted to DB..i have a alerts table which store message and user name to which the alert is to be send i wanna display the alert msg to user after it has been inserted...
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Dec 17, 2010
I had created Data Entry webform. Data is stored in Database. I have created 'Date' coloumn in database table with data type datetime. I want to isnert todays date automatically when data is inserted through form in DataBase.My current query to store data in database is:
public bool MyData(string COL1,string COL2,string COL3,string COL4,string COL5)
{
string SQL = "insert into TABLE values('" + COL1+ "','" + COL2+ "','" + COL3 + "','" + COL4 + "','" + COL5 + "')";
}
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Jul 7, 2010
and the ticker data should be move right to left or from left to right into a textbox or in any other control that is more suitable for this work.i have the little idea about this that this will be imlimented with the help of ajax or java script.but the whole process is not so clear so that i start my work.
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May 19, 2010
I have a cascading dropdownlist. The first drop down is for Departments and is databound on PageLoad from the database. The user then selects a department and the second dropdown is populated with the appropriate sub departments via JQuery/JSON which calls an httphandler. The problem is as follows: I select a department and the subdepartments are filled.
I finish what I'm doing on that screen and everything is fine. But then if I go to a different screen and add an additional subdepartment then come back to original screen, the new sub department won't appear in the cascading dropdown. I have to close the browser and restart the session in order for any new sub departments to appear even though they are in the database. I put a breakpoint in the httphandler and noticed that it is only called once per session per each department in the first dropdown. I don't know why this is happening. I want it to call the httphander EVERY time the index of the department dropdown is changed.
[Code]...
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Jan 2, 2010
I am providing registered members of a website a weekly mailing which contains URLs to private pages on the website.
For usability purposes, I don't want the user to have to provide their credentials after they click on the URL.
I am using the ASP.NET Membership provider model.
Question
How can I implement this so that the user can be logged in by virtue of clicking a specialized URL link?
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Jan 9, 2013
URL.... When I wrote this code in other page with different SP It didn't worked correctly I change SP in new SP I used INSERT code instead of UPDATE now when users didn't select Item from ddl3 it insert 'please select' in table these are my code
protected void ImageButton2_Click1(object sender, ImageClickEventArgs e) {
SqlCommand _cmd = new SqlCommand("insertSreg", _cn);
_cmd.CommandType = CommandType.StoredProcedure;
_cn.Open();
[code]....
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Dec 3, 2010
I'm creating an ecommerce site using asp.net and a Access Datasource, I have used the pre-defined logging in and registering controls provided by Visual Studio 2010 which stores the user data in a SQL server.
For my site the content of the shopping cart is uploaded to a table in the access database, I need to however save the contents of the cart to a specific user ID. For example if User number 1 orders book id's 4,7,2 this needs to be saved, but if user number 2 comes along and orders 4,1,7 this needs to be saved for them as well.
So a user can have many carts, this is sorted in access but with the user ID being saved to a different database is there anyway I can link the two databases so I can say
"Save bookid's 1,2,3 in tblcart where userID is the same as the logged in user"
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Mar 26, 2010
protected void Button3_Click(object sender, EventArgs e)
{
//Create a connection to the database
MySqlConnection conn = new MySqlConnection("Database=kid07025;Data Source=195.178.228.254;User Id=kid07025;Password=********");
//open the connection
conn.Open();
//MySQL Query which updates the row where Anvandarnamn = Anvandarnamn (recieved from a cookie)
MySqlCommand cmd = new MySqlCommand("UPDATE personer SET Information=?Information,Fnamn=?Fnamn,Enamn=?Enamn,Personnr=?Personnr,Adress=?Adress,Postnr=?Postnr,Ort=?Ort WHERE Anvandarnamn=?Anvandarnamn", conn);
// Update with new text
cmd.Parameters.AddWithValue("?Anvandarnamn", Request.Cookies["Anvandarnamn"].Value);
cmd.Parameters.AddWithValue("?Information", TextBox1.Text);
cmd.Parameters.AddWithValue("?Fnamn", TextBox2.Text);
cmd.Parameters.AddWithValue("?Enamn", TextBox3.Text);
cmd.Parameters.AddWithValue("?Personnr",TextBox4.Text);
cmd.Parameters.AddWithValue("?Adress", TextBox5.Text);
cmd.Parameters.AddWithValue("?Postnr", TextBox6.Text);
cmd.Parameters.AddWithValue("?Ort", TextBox7.Text);
cmd.ExecuteReader();
conn.Close();
RefreshProfile();
}
I don't know what I am doing wrong here, but the database doesn't get updated when I press the button.
I use VS 2010, ASP.NET
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Apr 7, 2010
I have a GridView, and its GridView_RowUpdating() method is called, and NewValues are set correctly... but at the end the database is not updated.
[Code]....
[Code]....
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