C# - Saving Multiple Items Per Single Database Cell?
May 13, 2010
i have a countries list. Each user can check multiple countries. Once saved, this "user country list" will be used to get whether other users fit into countries certain user chose.
Question is what would be the most efficient approach to this problem...
I have one, one to save user selection as delimited list like Canada,USA,France ... in single varchar(max) field but problem with it would be that once user from Germany enters page i perform this check on. To search for Germany i would be needed to get all items and un-delimit each field to check against value or to use sql 'like' which again is pretty damn slow...
Just to make sure, many users will have their own selections of countries from which and only they want to have users to land on their page. While millions of users will reach those pages. So the faster approach will be the better.
technology, MSSQL and ASP.NET
View 5 Replies
Similar Messages:
Feb 23, 2011
How to add individual hyperlink on comma separated values in single cell? For Eg: I have customer name comma separated in a single cell. I want each customer name as a single individual link.
View 2 Replies
May 25, 2012
Currently I have a grid view with few rows of data & edit and update for each row but I want it to be done on a single click with w external edit & save button how can the functionality be performed.
View 1 Replies
Jul 4, 2013
How can we use multiple field of database in one cell of gridview.
Like we have name,age,salry,address
i want in personal cell, in address cell
name=***** address=*****
Age=***** salary=*******
View 1 Replies
Jun 8, 2010
I'm trying to plan a series of websites that all share many of the resources such as css/jscript/images/content etc. For this reason I wanted to run all of the websites under the same application and IIS profile, but depending on the URL being used change the masterpage and theme/skin.
The ASP.NET membership database seems as if it was designed with this goal in mind because it allows you to setup multiple applications, however I believe the purpose for which this was built was to allow applications to be run under virtual directories/fodlers, not on seperate urls.
View 2 Replies
Feb 19, 2010
[code]....
I am having Table called Interest and has only one column named Answer...
i want the checked values to insert in database..If i select Family, News and Fashion... The inserted data should be in Three rows of answer field..
View 3 Replies
Jan 20, 2010
I creating a page where our clients can view advertising images and then able to download the images in different file formats. So I need the images and the different download types all saved into the same row in the database so that when I go to display them on the page when they select a picture the right download links will be there. So here where my problem comes in, I don't know how to code it so that I can insert mulitiple file paths into the database at once. The images are saved in a table called images. The downloads are saved in a table called Image Downloads.
Here is the code for the page I have it coded to submit the images to the database but not sure how to add the rest. I have got three different sql datasources for each table not sure if that's the way to go.
[Code]....
View 1 Replies
Aug 4, 2010
i use this to select one checkbox to isselected column how i convert this to multi checkboxlist to single column i use many ways more than 3 days without success
private void BindCheckBoxList()
{
DataTable dt = new DataTable();
SqlConnection connection = new SqlConnection(GetConnectionString());
try
{
connection.Open();
string sqlStatement = "SELECT * FROM boby";
SqlCommand sqlCmd = new SqlCommand(sqlStatement, connection);
SqlDataAdapter sqlDa = new SqlDataAdapter(sqlCmd);
sqlDa.Fill(dt);
if (dt.Rows.Count > 0)
{
CheckBoxList1.RepeatColumns = 4; // set the number of columns in the CheckBoxList
CheckBoxList1.DataSource = dt;
CheckBoxList1.DataTextField = "Name"; // the items to be displayed in the list items
CheckBoxList1.DataValueField = "Name"; // the id of the items displayed
CheckBoxList1.DataBind();
//Setting the Selected Items in the ChecBoxList based from the value in the database
//to do this, lets iterate to each items in the list
for (int i = 0; i < dt.Rows.Count; i++)
{
if (!string.IsNullOrEmpty(dt.Rows[i]["IsSelected"].ToString()))
{
CheckBoxList1.Items[i].Selected = Convert.ToBoolean(dt.Rows[i]["IsSelected"]);
}
}
}
}
catch (System.Data.SqlClient.SqlException ex)
{
string msg = "Fetch Error:";
msg += ex.Message;
throw new Exception(msg);
}
finally
{
connection.Close();
}
}
private void Update(string name, bool isSelected)
{
SqlConnection connection = new SqlConnection(GetConnectionString());
SqlCommand cmd;
string sqlStatement = string.Empty;
try
{
connection.Open();
sqlStatement = "UPDATE handymen SET IsSelected = @IsSelected WHERE Name = @BizName";
cmd = new SqlCommand(sqlStatement, connection);
cmd.Parameters.AddWithValue("@Name", name);
cmd.Parameters.AddWithValue("@IsSelected", isSelected);
cmd.CommandType = CommandType.Text;
cmd.ExecuteNonQuery();
}
catch (System.Data.SqlClient.SqlException ex)
{
string msg = "Insert/Update error";
msg += ex.Message;
throw new Exception(msg);
}
finally
{
connection.Close();
}
}
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
BindCheckBoxList();
}
}
protected void Button1_Click(object sender, EventArgs e)
{
string str = string.Empty;
for (int i = 0; i < CheckBoxList1.Items.Count; i++)
{
if (CheckBoxList1.Items[i].Selected)
{
str = CheckBoxList1.Items[i].Text;
Update(str, CheckBoxList1.Items[i].Selected);
}
}
//ReBind the List to retain the selected items on postbacks
BindCheckBoxList();
}
View 3 Replies
May 7, 2015
how can i add multiple row to Listview with texbox outside the listview before saving it to database.
View 1 Replies
May 7, 2015
Select tbl_name.name,tbl_midname.midname,tbl_last.lastname As name
From tbl_name
inner join tbl_midname on tbl_midname.id=tbl_name.id
inner join tbl_last on tbl_last.id=tbl_name.id
where tbl_name.id='1'
name mid name last name
Pavan Kumar Roy
How to bind all 3 column data in on column.
I need this result
Pavan Kumar Roy
View 1 Replies
Jun 7, 2010
I have a music related ASP.NET web site which caches a lot of static information from the database on the first request.Sometimes, the application is reset and cache is cleared while the application is on heavy load and then all http requests go to the database to retrieve that static data and cache it for other requests.
How can I ensure that only one request go to the database and cache the results, so that other request simply read that info from cache and not needlessly retrieve the same info over and over again.Can I use thread locking? For example, can I do something like lock(this) { db access here }?
View 2 Replies
May 19, 2010
I have a stored procedure that returns 3 tables within the single recordset it returns. If I set a SqlDataSource to get data from this procedure, it works, but it only returns the first table. I want to have a GridView display the data from the 2nd or 3rd table using a SqlDataSource, but I can't figure out how to specify a particular table.
While there are some posts discussing this out there, I can't get a definitive answer about whether or not this is even possible (?). In a worst-case scenario, I can create another SP that only returns the 3rd table - but that creates a little maintenance headache that I would prefer to avoid.
View 4 Replies
Jun 30, 2010
Query for Concatinate two cells into a single cell
View 9 Replies
Dec 14, 2010
I have a gridview which shows the contents of the shopping cart. The qty cell is a template control bound to the qty field in the datasource. My ideal scenario is to have the user highlit the qty, write the new one and press 'enter' to update the sqldatasource but this may not be possible.
My second chose is an Update button to update the data but this erases the data from the other fields not listed as key.
I have tried the edit and update functions but then all fields are editable and I dont't want that, just the qty cell. If I change the read only atrribute to true on the ones that I don't want edited, then it erases the information from those fields.
View 6 Replies
May 10, 2010
I'm having a bit of trouble with knowing how I can save items from a list I have in Application state in the global.asax as- Application[""].
My controller basically takes in some user input, I then pass this to another classes Method as parameters it gets added to a list all the time. This data thats getting added to the list I want to store it, but without using a db. By using Application State. . I have been instantiating this class and calling its method to return the list of items but I dont think Application State is saving it.
Here is what I have so far. .
protected void Application_Start()
{
RegisterRoutes(RouteTable.Routes);
TimeLineInformation t = new TimeLineInformation();
IList<SWTimeEnvInfoDTO> g = t.getInfo();
[Code]....
The SWTimeEnvInfoDTO type has get and set methods for the data.
I am calling the application from a View as well. It works with a string
Application["AppID"] = "fgt";
and shows this once i read it from my view.
View 1 Replies
Nov 22, 2010
I have a column value on a Formview and I want to change it at the last second to a programmatic value.
So I created this function to work on ItemUpdating so that the value of one of the formview fields could be changed programmatically to a constant I do a response.write value to make sure there is something in there. However, checking the database, the only getting written is null:
[Code]....
View 1 Replies
Feb 11, 2011
Is it possible to grab the cell data from Repeater items property such asDim test As String = myRepeater.Items(index).DataItem(2)where myRepeater has x rows and 10 columns and was bound from the DataTableSeems like it should be trivial, but looks like individual cells CAN NOT be accessed
View 1 Replies
Jun 28, 2010
Using Visual Studio 2008 (but have VWD 2010 available). Desire is populate a cell from a number of database items that have been concatenated together. Exampler would be Smith, John, 2010, Going After an Ideal Solution, 500 pages. Gridview allows me to set the cell format, but for the entire cell. I would like to present this as a mixture.
View 6 Replies
Jun 23, 2010
I have a multiview inside an updatepanel. in one of the views, I save a value in a session object like this:
Session["xyz"] = "some string value";
Then I switch to another view and try to pick it up the value in a button's OnClick event:
string x = Session["xyz"].ToString();
But I get a null reference error. Debugging it shows that Session["xyz"] is indeed null, yet other Session variables are still there. Is there something special about Session and AJAX?
View 5 Replies
Jan 12, 2011
below written question :
1.) What is the name of the OS process in which App Domain resides.
2.)if suppose There are Three Windows application hosted on a same envoirment and two instance is working for each application at a Time, means now total instance are six .what will happen among the below written cases :
a.) There will be six different app domain in a single OS process
b.) There will three app domain(one for each application) in a single OS process and some Parallel thread will be executed in each app domain for another instance.
c.) There will be Three OS process corresponding to each application.
3.) If eveything will remain same except there are three web application in place of windows in point 2, will there be any change in functioning.
View 1 Replies
Aug 18, 2015
I have a question in gridview, I want to combine my two or more records into a single cell with two rowsfor Example i have a ID, Name, Year Start, and Year End for Column name in database and i want call it into my gridview that the Year Start and Year End will combine to Year like:
In Database
ID Name Year Start Year End
1 Yourname 2010 2015
In Gridview:
ID Name Year
1 Yourname 2010 2015
in a year column i want it to two row..
View 1 Replies
Aug 18, 2015
I want to bind three column with one row in gridview in asp.net with c#,
i want like this,
Name | Info
----------------------
name | lastname
| phone number
| address
I get this by default
name | last name | phone number | address
View 1 Replies
Mar 16, 2011
I am using the cascading dropdownlist controls from the Ajax toolkit. I have everything working perfectly and all of my select changes work. I have 3 related select boxes that all work great for single item select. What I need is for my last dropdownlist to allow for the selection of multiple items. I have tried adding the 'multiple' attribute to the final dropdown list and it allows the selection of multiple items but I cannot get the items when I post back, just a single item.
View 7 Replies
Sep 13, 2010
For my site, I have a list of users and a list of events. I will be assigning users to each event. I have a table named EventUsers to hold this data:
EventUsers
EventID | UserID
1 | 123
1 | 456
2 | 789
On my page, I want to be able to add and remove users for a certain event. I could have a dropdown populated with users and an "Add" button next to it, then when I want to add a user, I pick one and click "Add". There would be a grid below it displaying all the users for the event, with "Delete" buttons for each one. The downside to this is that a database call is made for every Add and Delete.
Another option is to have two listboxes on the page - one on the left containing all users in the database, and another on the right which will contain users for the given event, and I can just add or remove from the list on the right. Then when I'm done, I click save, and it makes one database call. The only issue is that if I'm removing and adding, I'll have to delete every record in my EventUsers table for that event, and then add the changes. I've run into this before, and I've always gone with the dropdown method. What's the preferred method here?
View 3 Replies
Oct 25, 2010
When designing an ASP.NET user control my standard way for creating say a details view would be to create a property of the desired type on my page and would set the property in the page load based on the supplied query parameter. I feel I'm probably doing more work then necessary. If I could encase my view inside a container then I could merely have it databound and thus make everything declarative.My question is what would be the lightweight container/controls that would be appropriate for databinding a single object?As a second question, how can I handle invalid query strings with this method?
View 1 Replies
