ADO.NET :: Concatenate Linq To String?
Sep 24, 2010Below is sample linqtosql, is there possible to concate linq in select statement.becuz i wan to return vary number of column
[Code]....
[Code]....
Similar Messages:
ADO.NET :: Convert SQL Concatenate To LINQ Concatenate Query?
Oct 20, 2010convert the code below to LINQ, converting my project to a wseb version usimg LINQ To SQL. The project contains 10 textboxes to possibly select from, but I'm only providing the first two textboxes to simplify my question.
mySQL_Statement = "SELECT IDENTIFICATION_DATA.NSC,ITEMISCD.RNC,ITEMISCD.NSC1 FROM IDENTIFICATION_DATA LEFT OUTER JOIN ITEMISCD on IDENTIFICATION_DATA.NIIN = ITEMISCD.NIIN"
If Not ((TextBox1.Text = String.Empty) And (TextBox2.Text = String.Empty) Then
mySQL_Statement = mySQL_Statement + " where "
If Not (TextBox1.Text = String.Empty) Then
mySQL_Statement = mySQL_Statement + "IDENTIFICATION_DATA.NSC IN (" + TextBox1.Text & ")"
End If
If (TextBox1.Text = String.Empty) Then
mySQL_Statement = mySQL_Statement + "isnull(IDENTIFICATION_DATA.NIIN) = FALSE"
End If
If Not (TextBox2.Text = String.Empty) Then
If astrixState = 0 Then
If Not (TextBox1.Text = String.Empty) Then
mySQL_Statement = mySQL_Statement + " AND IDENTIFICATION_DATA.NIIN IN (" + TextBox2.Text & ")"
ElseIf (TextBox1.Text = String.Empty) Then
mySQL_Statement = mySQL_Statement + " AND IDENTIFICATION_DATA.NIIN IN (" + TextBox2.Text & ")"
MsgBox(mySQL_Statement)
End If
End If
If astrixState = 1 Then
If Not (TextBox1.Text = String.Empty) Then
mySQL_Statement = mySQL_Statement + " OR IDENTIFICATION_DATA.NIIN IN (" + TextBox2.Text & ")"
Else
mySQL_Statement = mySQL_Statement + " AND IDENTIFICATION_DATA.NIIN IN (" + TextBox2.Text & ")"
End If
End If
If astrixState = 2 Then
If Not (TextBox1.Text = String.Empty) Then
mySQL_Statement = mySQL_Statement + "AND IDENTIFICATION_DATA.NIIN NOT IN (" + TextBox2.Text & ")"
Else
mySQL_Statement = mySQL_Statement + " AND IDENTIFICATION_DATA.NIIN NOT IN (" + TextBox2.Text & ")"
End If
End If
End If
DataSource Controls :: Concatenate The Multiple Columns In Linq?
May 8, 2010how to write that below query in linq
DECLARE @Name varchar(20)
Select @Name = empFirstname+','+empLastName+','+empBankCode From srpEmployee
PRINT @Name
Forms Data Controls :: Concatenate Gridview Rows To Single String
Jan 28, 2010i need to concatenate the gridview rows to a single string if the gridview count is more than 100 then i need to perform the concatenation as 100 comma seperated and the next has to be carried over to the next string say if the count of gridview is 1000 then i need to concatenate the string as string1= 1to 100(Ex: a,b,c....) then string2=101-200 string3= 201-300... and so on. in case if i had to use String builder for this.. tel me how to proceed with this.
View 2 RepliesADO.NET :: How To Convert Bool Value Into String In LINQ
Dec 29, 2010I have the following query in which I have to convert the 'bool' valu into 'string' value as "Y" or "N". I have a class defined called ChartDosCodeInfoStruct which definesQAIndicator as String. The value I am feteching from DB is a bool value. I need to take this bool value and accordingly assignQAIndicator= "Y" or "N".
UserManager userManager = (UserManager)BaseEntityManager<DataAccessLayer.User>.GetSingleInstance();
List<User> user = userManager.GetCodersForChart(_currentChart.ChartId);
UIConfigurationObject.CoderForChart.value = user.First().FullName.ToString();
[code]...
ADO.NET :: Trim String In LINQ Query?
Mar 17, 2011I have the following query;
[Code]....
How do I modify to trim all strings?
ADO.NET :: Return String In LINQ Method?
Mar 9, 2011I'm really new to ASP.Net and for a school project we have to create a login form. Now I have managed to create a login with LINQ doing the following:
[Code]....
And in my html page:
protected void Test_Click(object sender, EventArgs e)
{
if (Class1.Controle(Convert.ToInt32(txt1.Text), txt2.Text))
[Code]....
I was thinking something amongst those lines, but I can't call p.GebruikerWachtwoord. So I'm guessing this is completely wrong.I hope somebody can help me figure this out, and I apologise for the poor explanation, English isn't my native language.
ADO.NET :: Cannot Convert String To Bool Error In LINQ
Oct 22, 2010cannot convert string to bool error in LINQthis is my code:
[Code]....
ADO.NET :: Converting Date To String And Formatting It Linq To SQL?
Aug 2, 2010I have problem in converting date to string I am using cstr(p.tripstart) , which is returning Date as 12 Aug 2010 12:AM I need to make formating This is my code :
[Code]....
ADO.NET :: Timestamp Wrongly Treated By LINQ / ASP As String
Feb 12, 2011I was following a MSDN walkthrough [URL] which is a very simple ASP.NET example with Visual Studio 2010:
·
I have a simple database table with a timestamp column;
·
I created a "Linq to SQL Class", and drag the table from Server Explorer onto it;
·
I dragged a LinqDataSource onto the web page and pointed it to the dbml;
·
I dragged a DetailsView onto the web page using the LinqDataSource.
·
I enabled editing on the data source.
When I run, the time stamp column is also displayed on the DetailsView as something like "AAAAAAAAB9Y=". Then, when I change the "EmployeeName" and update, I got following exception: Failed to set one or more properties on type person. Cannot convert value of parameter 'tstamp' from 'System.String' to 'System.Data.Linq.Binary'. I was strictly following the MSDN walkthrough. I tried multiple times, I even installed Visual Studio 2010 SP1 Beta. But it consistently through this exception. Can someone shed some light on this? Not a encouraging start form someone thinking to learn the lastest Microsoft stuff!
I was following a MSDN walkthrough, which is a very simple ASP.NET website with Visual Studio 2010: I have a simple database table with a timestamp column;I created a "Linq to SQL Class", and drag the table from Server Explorer onto it;I dragged a LinqDataSource onto the web page and pointed it to the dbml;I dragged a DetailsView onto the web page using the LinqDataSource.I enabled editing on the data source.When I run, the time stamp column is also displayed on the DetailsView as something like "AAAAAAAAB9Y=".Then, when I change the "EmployeeName" and update, I got following exception: Failed to set one or more properties on type person. Cannot convert value of parameter 'tstamp' from 'System.String' to 'System.Data.Linq.Binary'. I was strictly following the MSDN walkthrough. Can someone shed some light on this? Not a encouraging start form someone thinking to learn the lastest Microsoft stuff!dfsaf
ADO.NET :: Change Connection String Of Linq To Sql Entities?
Sep 9, 2010I have a solution which uses Linq to SQL Data Classes to acced the db. I have a project for my domain objects in my solution, which is a class library and has the dbml file. When I set up the dmbl using the wizard, Visual Studio created anapp.config file on that project with the connection string. It also creatting asettings file with the same info. I've noticed that if I change the connection string in the settings file, the app.config gets updated, which is the expected behaviour.
However, I'm having a problem when I deploy my web site to the production server. I already set the app.config file's Build Action to "Content", and also set Copy to ouput directory to "Always". Nevertheless, when I install the web site and change the connection string in the app.config file, it still takes the old connection string, so obviously I get an error. I've found that it only works if I change it with in Visual Studio and then compile, but of course that's not an optimal solution, because any change in the production db server would mean I have to change my project's assembly, thus generating a new version.
What do I have to configure so that the assembly takes the connection string form my app.config file directly after I deploy?
ADO.NET :: Linq To SQL - Crippled For Complex String Comparisons?
Nov 15, 2010The problem which I present involves needing a more complex string comparison mechanism with Linq to handle user driven queries of irregularly formatted data. The one instance I will use to explain this problem is phone numbers. To search a phone number you want to compare just the numbers (This system has to be able to handle internation as well as US domestic numbers). So users have been able (through many years) to enter phone numbers in any format they desire, ex:
555.555.5555
or
+1 555 555 5555
or
(555) 555-5555
etc
So I have a query I would LOVE to use, but because SQL cannot translate regx objects I have very few options that I am aware of. The query I want to use is as follows:...............
DataSource Controls :: LINQ,C# Conditional Where With String.Contains...
Sep 22, 2010I'm trying to find a way to do the following psudo:
void foo(int iArea, int iCity)
{
using (myDataContext context = new myDateContext)
{
var query =
from ad in context.Ads
join publisher in cintext.Publishers on ad.PublisherID equals publisher.ID
select new
[code]...
I can't find a way to do the check if the area code(iArea) is contained iside the string of the adArea from the DB.
ADO.NET :: Entity Framework - How To Join Tables Without LINQ And With Only String
Sep 30, 2010I have a question about Entity Framework. answer if you know answer on this. I have such query :
[Code]....
Particularly I want to join few tables in one query, but I can NOT use LINQ and can NOT use ObjectQuery with objects mapped to DB fields inside my query. Because each entity creates dynamically. So this is what i
can NOT use : [URL]
The question is can I use something like this instead of using objects?
[Code]....
The purpose is to use Join method of ObjectQuery with syntax as in Where method :[URL]
Linq - QueryExtender Parameter Date Format String?
Mar 14, 2011I would like to use QueryExtender control to retrieve records in a given date range.
<asp:QueryExtender ID="qeFilter" runat="server" TargetControlID="EntityDataSource1">
<asp:RangeExpression DataField="Date" MaxType="Inclusive" MinType="Inclusive">
<asp:ControlParameter ControlID="txtFrom" />
<asp:ControlParameter ControlID="txtTo" />
</asp:RangeExpression>
</asp:QueryExtender>
The problem is that date in text boxes is in "d.M.yyyy" format. I am unable to figure out how to specify the format for the asp:ControlParameter.
C# - How To Load An Existing Connection String For Linq To SQL From An App.config File
May 25, 2010I'm running into a really annoying problem with my Linq to SQL project. When I add everything in under the web project everything goes as expected and I can tell it to use my existing connection string stored in the web.config file and the Linq code pulls directly from the ConfigurationManager.
This all turns ugly once I move the code into its own project. I've created an app.config file, put the connection string in there as it was in the web.config but when I try to add another table in the IDE keeps forcing me to either hardcode the connection string or creates a Settings file and puts it in there, which then adds a new entry into the app.config file with a new name.
Is there a way keep my Linq code in its own project yet still refer back to my config file without the IDE continuously hardcoding the connection string or creating the Settings file? I'm converting part of my DAL over to use Linq to SQL so I'd like to use the existing connection string that our old code is using as well as keep the value in a common location, and one spot, instead of in a number of spots.
Manually changing the mode to WebSettings instead of AppSettings works untill I try to add a new table, then it goes back to hardcoding the value or recreating the Settings file. I also tried to switch the project type to be a web project and then rename my app.config to web.config and then everything works as I'd like it to. I'm just not sure if there are any downfalls to keeping this as a web project since it really isn't one. The project only contains the Linq to SQL code and an implementation of my repository classes.
My project layout looks like this
[code]....
Every time I try to make the default constructor look like the first way, it always auto changes back to the second way once I make a change to the file unless the DBML is inside of a web project.
DataSource Controls :: Returning String Value Using Stored Procedure And Linq
Feb 7, 2010I am having problems returning a string value through a stored procedure/linq to a label. Everything works fine if I return an integer value but I cant get a string value to bind to a label. I get the error message
Microsoft.VisualBasic.CompilerServices.Conversions.ParseDouble(String Value,
NumberFormatInfo NumberFormat) +201
Microsoft.VisualBasic.CompilerServices.Conversions.ToInteger(String Value) +66
[InvalidCastException: String "System.Data.Linq.SqlClient.SqlPr" to 'Integer' is invalid‚]
This is the stored procedure
ALTER PROCEDURE test
AS
Select ProductName
From Products
This is the vb page
Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Dim db As New DataClassesDataContext
Dim product As Integer = db.test.ToString
Label1.Text = product
End Sub
This is the aspx page
<form id="form1" runat="server">
<asp:Label ID="Label1" runat="server" Text=""></asp:Label>
</form>
DataSource Controls :: Common Connection String In LINq To SQL Files?
Feb 20, 2010I am using LINQ to SQL files in my class libray since every LINQ to SQL sources file is a seprate file and i have to set database connection string in each class library. Now, i have total 7 class libraires in my project how connection string be passed from web.onfg to LINQ file, so that i don't need to manually change the connection string. lke we did in asp.net 2.0 using connection string property in class file library.
How could we pass the same in LINQ's designer file.
MVC :: Concatenate SQL Results?
Mar 23, 2011I am working on an application that requires a lot of data sets being sent to the client when application starts. To avoid multiple trips to the server I want to combine all the data together and send it as one piece. I cannot build one single SQL statement, it's going to be many. Should I just put SQL results together like strings?
View 14 RepliesDataSource Controls :: Returning Single String Value Using Linq And Stored Procedure
Jun 21, 2010I can return single integer values when using stored procedures with Linq but I cant get single string values returned.
View 2 RepliesDataSource Controls :: Update Table Field With LINQ To SQL And Query String
Jul 11, 2010I am trying to update my table ARTICLES and it has a field COUNTER, Everytime a user enter this ARTICLES, the page_load event runs a LINQ to SQL query taking the QueryString as parameter, increasing the COUNTER field in 1.
[Code]....
SQL Server :: How To Concatenate The Row Values
Jul 30, 2010I want to concatenate the row values in field.I am having 123 rows in one column.So i have to insert those 123 row values into 123 column values.
For that I used cursor now i m getting the result like this
1000,
2000,
3000,
So i want this values in one row so that i can write that in insert query to insert those values in other table as multiple column values.
Evaluate Expression To Add Not To Concatenate?
Oct 10, 2010I am preparing string expression to use it to insert statement like
str="insert into franchise (xx,yyy,xxxxx) values (" + rblxx.SelectedIndex + 1 .............
when I do so it simply concats the thing like value of rblxx.SelectedIndex "0" and 1 makes 01 and not 1.suggest some function and trick to add the numeric values not concat. I tried using System.Convert.ToInt32 but not worked for me.
Forms Data Controls :: Append Two String Fields To Display In Gridview Using LINQ
Feb 4, 2011I need to display Name1 and Name2 in a single column in gridview. I am using Linq. How is this done.
View 2 RepliesC# - Concatenate The Html Tag And Textbox.text
Feb 12, 2010i need to concatenate the html tag like <br/> and to the textbox.text in asp.net textbox. i have used this txtMessage.Text + <br/> + strgetlist; but it is displaying TaskName<br/>Project1,project2.. how to give break and space between thest two.
View 4 Replies
