I have a drop down with several option. I would like that if a certain item is select then a certain query will run. I read a post that
azamsharp on 12/23/03 .In that post he suggested to do:
string myProcedure = DropDownList.SelectedItem.value.ToString();
SqlCommand myCommand = new SqlCommand("myProcedure",myConnection);
while reading through the post it seems that this wasn't a great idea.
Is it possible to write multiple queries on a single button click? if yes then how?
View 5 RepliesWe are building a front page/dashboard that queries our database for live statistics. The page has 3 update panels, each update panel has a user control that pulls data for it's box. Lets call the user controls UC_NotStarted, UC_Active and UC_Finished.
We have built the queries that return the data and all of them take a while to run (~7 seconds each). So if we let the first page run with one update panel the image spins for ~21 seconds and display everything. We have broken that code into 3 update panels and set the loading to conditional. When we do this we get one box to load every 7 seconds. That's a step in the right direction but they load sequentially (UC_NotStarted is queried waits 7 seconds and displays, then UC_Active goes for 7 seconds, and finally UC_Finished runs for 7 seconds). We are still at 21 seconds but data is being shown every 7 seconds.
We would like all of the data to be shown in 7 seconds since all of the update panels should be fetching the data at the same time. Instead of using LinqToSQL to pull the data I am now leaning towards web services to get it but not sure if that will work.
protected void Button2_Click(object sender, EventArgs e)
{
String a = DropDownList1.SelectedItem.Value;
String b = DropDownList3.SelectedItem.Value.PadLeft(3, '0');
String c = TextBox2.Text.PadLeft(5,'0').ToString();
String d = TextBox3.Text.ToString();
String digit = a+ b + c + d;
try
{
myConn = new OdbcConnection("Driver={MySQL ODBC 3.51 Driver};Server=localhost;Database=testcase;User=root;Password=root;Option=3;");
myConn.Open();
//**
string sql = "select * from testcase.main where reg_no =?";
//**
OdbcCommand cmd = new OdbcCommand(sql, myConn);
//**
cmd.Parameters.AddWithValue("?", digit);
MyReader = cmd.ExecuteReader();
//**
while (MyReader.Read())
{
String f = MyReader["pet_name"].ToString();
String g = MyReader["res_name"].ToString();
Label9.Visible = true;
Label9.Text = f;
Label10.Visible = true;
Label10.Text = "VS";
//Label11.Visible = true;
Label11.Text = g;
}
MyReader.Close();
}
catch (Exception e1)
{
Response.Write(e1.ToString());
}
finally
{
if (MyReader != null && !MyReader.IsClosed)
{
MyReader.Close();
}
if (myConn != null && myConn.State == ConnectionState.Open)
{
myConn.Close();
}
}
I want to add another sql query which is using two tables to fetch the data and than i want to display it in a dropdownlist after fetching data from database. How should i proceed?? Should i create a totally new connection? I tried many different ways like, creating new connection and new reader and entire try and catch block i coded again but on running the website i t was taking very long to load the contents. What i did i modified only this portion(below code) and used the entire try catch again but it dint work.
while (MyReader1.Read())
{
String f = MyReader1["ret"].ToString();
DropDownList1.Items.Add(f);
}
how to run multiple queries on a single button click. Actually I want whatever a user write in text box and click the button the text would get inserted in table category and also a table name project should get updated. I am using Sql server 2005 and c#
View 2 Repliesbelow 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.
I Pieces
NA 400
I am trying something apart of my boundries, is there any way to disable a single intem in dropdownlist or stop the ddl change event for a single item.
View 2 RepliesI 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.
We have an ASP.NET / Silveright web application. The silverlight client displays user specific data in a graphical form - it requests the data from the server: Problem: Getting this data is expensive, due to the underlying database queries that the server has to perform - so the client has to wait... Optimisation Idea: We run the database queries at regular intervals on the server, writing the results to a 'userdata' table in a database 'close' to where the ASP.NET server runs. The process of running the queries and writing the data to the tables is performed by a 'data collection' service, which is separated from the ASP.NET server.
When the client requests data the server retrieves it from a 'userdata' table. This should be nice and quick - we probably have the 'userdata' tables on the same machine as the ASP.NET server. We also have the added benefit that the client sees data even if the underlying database is offline. Of course the data is not live - but all data is potentially old as soon as it reaches the client. So now my Problem: The 'data collection' service needs the user credentials in order to perform these database queries (because each user gets different results for the same query).
How can I store user credentials in a database, in an acceptable 'secure' way? Such that the 'data collection' can impersonate a user to perform the database queries. Our initial scenario is based upon using windows integrated login to the database.
I'm fairly new to ASP.NET and am working through a tutorial that demonstrates the use of DataAdapter, DataTable, and DataRow classes. The tutorial focuses on binding returned DataTables to GridView objects - I'm having trouble understanding what to do to extract one row for display. I've found I can do the following:
ProductsTableAdapter productsAdapter = new ProductsTableAdapter();
Northwind.ProductsTable productsTable = productsAdapter.GetSingleByProductID(searchID)
Northwind.ProductsRow productRow = (Northwind.ProductsRow)productsTable.Rows[0];
A ProductsTable should be able to return its own ProductRows w/o resorting to a cast, no? Can't find how to do it otherwise. I'm thinking how to go about creating a form where the user will only ever be working on one record at a time. Wouldn't it make sense for the DAL to return a ProductsRow instead of a ProductsTable?
i want to display results from multiple queries in a repeater... is it possible? for example, a user searches for a keyword "test" i search 4 different databases for it, and display results from all 4 in one repeater.
View 2 Repliesin VB, exactly how would you show only 1 gridview for this type of page example, where a user can fill in multiple options for searching:
Enter first and last name
_______firstname
_______lastname
[code]...
I am trying to do multiple queries with multiple CheckBoxes. This code worked until just recently, and I didn't make any changes other than adding a single field to my SQL Server DB; field is named 'Crawl'. Now, nothing works! SearchCheckBox.aspx:
[Code]....
SearchCheckBox.aspx.vb
[Code]....
In DesignView, the error reads 'Error Creating control SqlDataSource3' Literal
content ('connectionString="Data Source=EXCEL-4J2W8KYNPSQLEXPRESS;Initial
Catalog=PubCrawls;Integrated Security=True" ProviderName="System.Data.SqlClient"
SelectCommand="SELECT ID,
Pub, Street, Neighborhood, City, State, RelativeAddress, Crawl FROM ListofPubs
WHERE (Neighborhood = @Neighborhood1) OR (Neighborhood = @Neighborhood2) OR
(Neighborhood = @Neighborhood3) _
OR (Neighborhood =
@Neighborhood4) OR (Neighborhood = @Neighborhood5) OR (Neighborhood =
@Neighborhood6) OR (Neighborhood = @Neighborhood7) OR (Neighborhood =
@Neighborhood8) OR (Neighborhood = @Neighborhood9) . . .
goes on like this for a while) is not allowed within a 'System.Web.UI.WebControls.SqlDataSource' This line is highlighted red: connectionString="Data Source=EXCEL-4J2W8KYNPSQLEXPRESS;Initial Catalog=PubCrawls;Integrated Security=True" Finally, there are 19 'Neighborhoods' in my list. There must be a way to loop through the neighborhoods in my SQL statement, right. For Loop or While Loop?
On satisfying the If condition, I need to run 2 MS SQL update queries. How can I accomplish this? I am using C# as the server side language.
View 6 RepliesI want to find the sum of each tables fileld. how can do this. i tried the following.but could nt get the correct sum. "SELECT SUM(gb) FROM data20 union all SELECT SUM(gb) FROM data10 union all SELECT SUM(gb) FROM data5 union all SELECT SUM(gb) FROM data6"
View 7 RepliesI am creating entries in a contract table using linq to sql.
One column needs to conditionally be assigned an application number from a range of values.
I'd like to simply increment the max existing value, however it is a multi-user application and I'm concerned about multiple contracts receiving the same app number if they happen too close together.
Is there a way to either force the entire thing to use the same transaction, or to execute both during the same submit?
I would like to make a "select" from an Access (mdb) file in SQL Server 2008 R2. I was using:
SELECT * FROM OPENROWSET('Microsoft.ACE.OLEDB.12.0','C:..FILE.mdb', 'SELECT * FROM Users')
But I´m getting the error: Msg 7308, Level 16, State 1, Line 1 OLE DB provider 'Microsoft.ACE.OLEDB.12.0' cannot be used for distributed queries because the provider is configured to run in single-threaded apartment mode.
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..
I am working on asp.net 3.5 and in MVC using Linq to SQL classes. In my MVC project i am calling stored procedure using linq to sql that conatin query joining two tables.Below is my code in Partial class
[
Function(Name="dbo.GetUserWiseThreadDetail_SP")]
[ResultType(typeof(Thread))]
[ResultType(typeof(Reply))]
public
IMultipleResults GetUserWiseThreadDetail_SP([Parameter(DbType="VarChar(30)")]
string userID)
{
ExecuteResult result = this.ExecuteMethodCall(this,
(MethodInfo)(MethodInfo.GetCurrentMethod())), userID);
return ((IMultipleResults)(result.ReturnValue));
}
In one of the controller i have made one more class
public class
MypostIndexData
{
public
IEnumerable<Thread> Thrds {
get;
set; }
public
IEnumerable<Reply> Repls {
get;
set; }
public MypostIndexData(IEnumerable<Thread>
thrds,IEnumerable<Reply> repls)
{
this.Thrds=thrds;this.Repls=repls;
}
}
finally coding of controller action method
ForumDataContext pmforum = new
PMForumDataContext();
public
ActionResult MyPosts(string userId)
{
IEnumerable<Thread>thrds;
IEnumerable<Reply>repls;
IMultipleResults result = pmforum.GetUserWiseThreadDetail_SP(userId); (this satement doesnot give any result,if i execute stored proc in
sql it give the results)
thrds = result.GetResult<Thread>();
List<Thread> thrdlist =
new
List<Thread>(thrds);
repls = result.GetResult<Reply>();
List<Reply> replylist;
if (repls !=
null)
{
replylist = new
List<Reply>(repls);
}
return View(new
MypostIndexData(thrds,repls));
I am unable to understand why i am not getting any results?
I want to bind three column with one row in gridview in asp.net with c#,
i want like this,Â
Name | Info
----------------------
name | lastname
    | phone number
    | address
I get this by default
name | last name | phone number | addressÂ
I am accepting query/queries from user (our support team) in a text box where user can enter only one query or multiple queries. I need to display result of all queries entered in the textbox. If it is SELECT statement then result of that statement in grid which is done. If UPDATE/INSERT/DELETE then total number of rows affected which is also done but if only one UPDATE/INSERT/DELETE statement is entered in the textbox.
If user enters 2 UPDATE statements and then a SELECT statement then how can I get number of rows affected for individual UPDATE statements just like SQL Server Qury Analyzer displays messages in its result pane.
e.g.
(6 row(s) affected) -- first UPDATE statement
(4 row(s) affected) -- second UPDATE statement
(16 row(s) affected) -- for SELECT statement (grid will also be displayed along with these messages).
I tried almost everything, SqlDataSource (returns count of first statement only), SqlCommand.ExecuteNonQuery and DataAdapter.Fill (returns count of last statement only).
i have 3 drop down list in my page
1-ddlzone1
2-ddldistrict1
3-ddlstore1
this is  ddlzone1 code
protected void DDLzone1_SelectedIndexChanged(object sender, EventArgs e) {
DDLstore1.Items.Clear();
DDLstore1.Items.Add(new ListItem("select center", ""));
DDLstore1.AppendDataBoundItems = true;
SqlCommand _cmd = new SqlCommand("selectcenter", _cn);
[CODE].....
I am using the following procedure. But when i running the procedure with multiple values it is getting error as given below. But single value specification is working fine. Ho to use dynamic query. But i am not willing to use it. solve the issue "Conversion failed when converting the varchar value ''1','2'' to data type int." My Query is:
[Code]....
I need to make multiple button in a single image in asp.net.and need coding also for vb.net.
View 4 Replies