Forms Data Controls :: How To Compare Database Value With New Updated Value
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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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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Jul 26, 2010
I have listbox which retrieve data from database as follow
[Code]....
if the user want to access editpage , and he made some changes on listbox2 by removeing or adding more rows , it should be edited in database I need the best way to edit it , the way that I am doing now is deleting all record and then entring new record from listbox2 , but sometime it's adding duplicate record.
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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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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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Oct 4, 2010
I have a web app that allows users to update their public facing information (bio, profile pics, etc). Once a user updates a piece of information, it needs to be held "pending" until an authorized admin user "approves" the change. I was thinking that I'd keep a table (called something like PendingHistory) which would hold the "pending" changes, then once approved (which requires TWO admin user to approve), I'll dump this data into the "real" tables that's responsible for displaying information to the public. Is there a way (I'm sure there has to be) to only store those fields that were changed? Some sort of comparison of the original field vs "new" so I don't have to save everything. I was hoping to make it as easy as possible for the admin crew, so that they could just get a view of "pending changes" vs the entire row of data. So basically I need something like this:
September 15, 2010 John Doe requested to change: First Name to Fred; Last Name to Flinstone
[Date Updated] [user] [column name] [column name]
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Apr 28, 2010
I have a web form that displays the results from a table. How can I compare the table between dates and display the differences of the table?
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Jul 7, 2010
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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.
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[Code]...
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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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Apr 5, 2010
I have a Grid View and show data from my sql database table1 ,when click on link button then genrate a pop up box nd data show in any control like detail view bt col_id show in textbox .
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table1,table2
firt table fields are id,name,add,status,
second table fields r id,name add,status ,new staus,
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Jan 10, 2011
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</asp:content>
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Jun 24, 2010
I have a gridview bind to an object datasource Now there is an edit button to edit the entriesUser selects new entries and clicks update Gridview gets updated (all previous entries replaced)Now the new records dont contain the table id of the previously added rowsOn form update, how do I know which entries to drop from database and which entries to insert as the previous rows are all gone?the results are in form of collections of objects returned by object datasource.
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Mar 13, 2011
I have an image file to be uploaded and to be updated in my database. I've already write the C# code based in a VB code.
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DetailsViewUpdateEventArgs e
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In VB the Code is:
e.Values(
"ImageData"
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May 23, 2010
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May 19, 2010
I have a data bound control (using <%# Bind %>). I am trying to change the value of it before it gets udpated.
I use:
[Code]....
But the value is not changed to 1.
Also, e.Keys, OldValues and NewValues are all empty for whatever reason.
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Sep 13, 2010
On one (aspx) page I have a GridView (GridView has multiple pages). After a user selects a row/record and clicks "edit" he's redirected to another (.aspx) page where he edits the selected record via DetailsView. fter clicking update on DetailsView he's redirected back to the page containing the GridView.What is the simplest/shortest way that the updated record is automatically selected on the Gridview (e.g. at Page_Load event)?
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May 5, 2010
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I've added CommandName="myUpdateRowTotal" to
my templates.
<ItemTemplate>
<asp:TextBox ID="R01_Item_txt" CommandName="myUpdateRowTotal" runat="server" BackColor="White"
Font-Names="Arial" Font-Size="10pt" ForeColor="Blue"
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Width="75px"></asp:TextBox>
</ItemTemplate>
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Apr 30, 2010
I have a web page with a Form a Button, a TextBox and a DataGridView in it. The DataGridView uses a SqlDataSource as its data source. SqlDataSource has one parameter which gets it's value from a
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protected void Page_Load(object sender, EventArgs e)
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Dec 16, 2010
I have a datalist and gridview that have a image in a column.. when you click the imagebutton, its calls my method that updates a table. The page is posting during this event, but when the page is done, the image hasnt changed.. im sure it has to do with the datasource not binding during that click.. so where can i move this code to or can i simply bind the control during that click? Currently im handling it in the itemdatabound event.. which would explain it.. but where is the correct place to handle this logic?
[Code]....
The control on the page is configured like so..
[Code]....
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Jan 4, 2010
I was trying to update a detail view from code behind (vb.net). I know how to fire the event but dont know where to put the DML query where i should do update and insert, i mean in which event?:
update.aspx
[Code]....
update.aspx.vb
[Code]....
No error but is not working.
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Sep 23, 2010
There is a very common problem I am facing in my new webproject in gridview control.The sequence of the execution of the process is as follows:There are some search parameters in SearchPage with a gridview. In gridview's rows there is an Edit button.By providing search parameter(s), data populated to gridview and if we click edit button a new page opens as a popup to update record.In new page the record is updated fine. On successful updation user close the window but he goes to the Search page he again finds the same record with the same parameters to see changes it remains unchanged.Its only changed when he search another record and then again provides the previous parameters.I don't know why is this behaviour of gridview?
Any idea would be helpful.
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