Limit On Blob/image Data Type In SQL Compact 3.5 SP 1 BETA For ADO Entity Framework?
Apr 5, 2008
Hi! I tried to save some image data, but it get truncated at 8000 (the table column is defined as Image). I then wrote a converter to try ntext-datatype instead, but it gets truncated at 4000.
The code uses only ADO entity framework for database access. Is there a way to store binary data larger than 8000 bytes? I am running SQL Compact 3.5 sp 1 BETA.
I have a datagridview bound to a table that is part of an Entity Framework model. A user can edit data in the datagridview and save the changes back to SQL. But, there is a stored procedure that can also change the data, in SQL, not in the datagridview. When I try to "refresh" the datagridview the linq query always returned the older cached data. Here's the code that I have tried using to force EF to pull retrieve new data:
// now refresh the maintenance datagridview data source using (var context = new spdwEntities()) { var maintData = from o in spdwContext.MR_EquipmentCheck where o.ProdDate == editDate orderby o.Caster, o.Strand select o; mnt_DGV.DataSource = maintData; }
When I debug, I can see that the SQL table has the updated data in it, but when this snippet of code runs, maintData has the old data in it.
How can I tell if the System.Data.SqlServerCe assembly I am referencing is meant for Desktop use as opposed to Compact development? We are using NUnit as our testing framework and I get the following error when I attempt to execute nunit-console on my test fixture referencing SqlServerCe:
System.IO.FileLoadException : Could not load file or assembly 'System.Data.SqlServerCe, Version=9.0.242.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040) ---->
System.IO.FileLoadException : Could not load file or assembly 'System.Data.SqlServerCe, Version=3.0.3600.0, Culture=neutral, PublicKeyToken=3be235df1c8d2ad3, Retargetable=Yes' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)
The unit tests run fine from inside of Visual Studio using the Resharper Unit Test Runner...
End Sub this code worked well. we know sql7 is not compatiable with vista. please tell us how to connect it wiith sql2005 . we downloaded orcas express edition beta. we created a database also. please let u know how to connect with Microsoft SQL Server Compact 3.5 (.NET Framework Data Provider for Microsoft SQL Server Compact 3.5).
Working in a project using Entity Framework (Code First)...
Until now the project has been connected to a (generated) SQL Server Compact 4.0 database,
but now we want to connect to a SQL Server (at least 2008R2 since we will use FILESTREAM...)
Our problem right now is the possibility to enter Infinity values into REAL columns in the DB...
It works in the SQL Server Compact but we have not been able to get it to work in 2008R2 or 2014
The insertion of Infinity values is constructed by the Entity Framework (from using float.PositiveInfinity in C#) automatically so I mainly wonder if it at all is possible in a "real" database. Maybe there are some configurations possible to get it to work?
I have recently downloaded Orcas beta VS product and had no previous version of VS before. The install went clean and I have been able to generate Window apps and web apps with very little issues; however, I have one issue with running a web app using the "view in browser" option for checking an aspx page for validity. If I use the default Northwind database provided and generate an aspx form using the "DataSet" toolbox widget, the tool prompts for the datasource etc. required to generate the required code. I can select the Northwind database and select the desired columns from one of the tables. Once completed, I build the project (clean build) and then select the "view in browser" option to verify the results. The result is an error page indicating a server error -> Failed to find or load the registered .Net Framework Data Provider.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.Configuration.ConfigurationErrorsException: Failed to find or load the registered .Net Framework Data Provider.
I created on odbc connection to an iSeries(as400) box and was successfull in displaying the table on the webpage! I looked into the web.config file and it appears that all the required XML data is present. Any help would be appreciated as I am fairly green when it comes the .NET world.
Does anyone have any experience of this type of data please? I have been asked to work on a project where it looks like we will be taking MS Office files and scanned images and storing them in a SQL 2000 db so that they can be aquired by a third party application. I am most intereested in the size of the records as the server may need upgrading, for space and performance. I am also interested in how a BLOB record is created, is it a particular save process from Word / Excel etc or can you specify to import as a BLOB from a SQL script?
Any info welcomed as i really dont know where to start !!!
I am trying to store binary datafiles into a SQl Express table. However I can not find the BLOB data type when I am designing the table. Are we limited to using that kind of data type in the Express edition? Thanks.
As you all know, in Framework 2.0 on the desktop platform you have the convenient "abstract" Db* classes that can be used to write more generic code. For instance System.Data.SqlClient.SqlConnection inherits from System.Data.Common.DbConnection, and so forth. Now the docs clearly say that this applies to the corresponding classes in the Compact Framework. And i have seen this implied by other web searchs I've done. However this does not seem to be the case -- or, I'm missing something somewhere.
The following simple code on the desktop platform compiles OK:
using System.Data; using System.Data.Common; using System.Data.SqlClient; DbConnection conn = new SqlConnection();
However it doesn't compile in a compact framework project: "Cannot implicitly convert type 'System.Data.SqlClient.SqlConnection' to 'System.Data.Common.DbConnection'".
Reflector also indicates that the Compact Framework class doesn't inherit from DbConnection.
OK, so am I missing something here, or what was the reason that Microsoft did it differently??
Hi all, Yesterday, I just downloaded the SQL Server 2005 Express (SQLEXPR.EXE) and tried to install it in my Windows XP Pro PC that is on Microsoft NT 4 LAN System. I got the following error: Microsoft SQL Server 2005 CTP setup The Microfost .NET Framework 2.0 is not installed. Please install before running setup. This morning, I downloaded the NET Framework Version 2.0 Redistributable Package Beta 2 (x86) from the Microsoft Download Center and installed it in my Windows XP Pro PC. Then I tried to install the SQL Server 2005 Express (SQLEXPR.EXE) again. This time I got a new error: SQL Server 2005 Setup has detected incompatible components from beta versions of Visual Studio, .NET Framework, or SQL Server 2005. Use ADD or Remove Programs to remove these components, and then run SQL Server 2005 Setup again. I am confused and lost in this installation problem. Was the .NET Framework Version 2.0 Redistributable Package Beta 2 (x86) a wrong Microsoft .NET Framework 2.0 I downloaded and installed in my PC? Where is the right Microsoft .NET Framework 2.0 for the SQL Server 2005 Express? Please help and advise. Thanks in advance, Scott Chang
you can, with a dataset do something like myDataSet.WriteXml(m_XmlFile, XmlWriteMode.IgnoreSchema) and get XML for a record.... is it possible to do something like that with SQLserverCeresultset? i know i could probably loop thru the columns and create the xml manually... but using somethinglike writexml will give better performance? right now im not using anything from the XML class... from my previous exp with using XML classes on the Compact framework gives slow performance...
Hai Every one i am facing a werid problem it is related to storing a long text data in SQL 2000 the text data is some thing like the following "dshjfsjlksdjakdjlksadjfeidkadflkdsajfieawirfjalkdfjsakdfjaiekdvnmckaumnmmmmmmmmmmmmmmmoadifdjsakdjfauiereoweiiiiiiiiiiiiiiiiiiiiiiiiiiidalfkjdsa,mlfdsdflvmsaldifsdjfskladfakdfjakladkalfkfadkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkadlkfjaidfajfkamcmmmmmmmmmmmmmmmmmmmmmmmmmmmmmiadlmfalierfmaerjeaiaelelllllllllllllllllllll..." in short it is really long so i opted to go with TEXT data type as it states that it can store more than 8 kb but when i try to insert this data it gives me error stating that Text data type cannot be of length more than 128...........? What am i doing wrong........if Text is not the proper datatype to store such a data then can anyone suggest some thing better............... Thanks in advance Austin
I am aware of the many posts that have addressed this issue in the past - I resolved this issue many months ago when it first happened to me. However, I have recently created a headless version of my Windows CE 6.0 based project that uses the Headless versions of the Compact Framework and this problem has suddenly re-surfaced. As in my UI equipped versions, the SQL CE cab files are copied to the device and have been installed. I have also tried copying the sqlceme35.dll to the application folder. The only real difference I can see is that the device is using the headless version so I suspect that there may be some incompatibility.
Has anyone successfully deployed a SCQL CE aplication to a headless device and if so were there any special steps that had to be taken to make it work?
I have been asked to write a piece of code that will insert an image object into a database using a stored procedure and the Microsoft Enterprise Library. Has anyone done this before? Do you have any code examples about how to update a database with an image datatype that needs to be chunked, etc...
In this instance, I need to open up a word document and save the contents as an image in a database.
hi, i'm a student doing my final year project. during the user requirements stage, my client proposed storing all files (.doc, .jpg, .mp3) into the sql database. i found out that the way to do this is to write the files as binary data in order to store them in the database. my concern is will this data storage overload the database server? i read somewhere that the retrieval of data as binary data is the same as retrieving text. but the estimation of users is around 27,000.. if i'm not wrong, the sql database server should be MS SQL Server 2005, or at least 2003.
I have a field in my personal table that has image data type as Pic,my SQL code is : SELECT Department.ID,Department.[Name],Department.CreatedDate,Department.[Pic] ,COUNT([Group].[Name]) FROM Department INNER JOIN [Group] ON Department.ID=[Group].DepartmentID Group by Department.ID,Department.[Name],Department.CreatedDate,Department.[Pic] This error occured : Msg 306, Level 16, State 2, Line 1 The text, ntext, and image data types cannot be compared or sorted, except when using IS NULL or LIKE operator. Please help me. Thanks.
Hi, I have a table with a column having image data type in it.I need to move four records from this table to another table in development box.Can any one suggest me how can i do this? I don't think insert into select * will insert image data type.Is there any way around? thanks Mohan
I'm developing a website with SQL SERVER 2000 and IIS6 (beta). I'm using ASP.NET webforms for my application. I was wondering if anyone knows how to use the Image datatype for dynamically loading images/word docs/sound files
pls. Help! I am not getting that how to use the image datatype in sql server 2000 when i am inserting text to it and on retrieving it is showing hexadecimal string ... I want to know all of your views on the usage of image datatype.. Thanks...
Hi,In my SQL Server 2000, I have a Table MyUser which has one colum PassWord,and the PassWord's datatype is Image. I'm wondering how can a password bean image.Thanks for help.Jason
I have two instances of SQL Server on the same PC:
Default instance: SQL Server 2000 Named instance with name €œMS2005€?: SQL Server 2005. Also I have another SQL Server 2005 on another PC.
I created a .NET 2.0 Compact Framework application that connects to the database and executes simple query. This application can connect to any instance of the SQL Server when it is executed on the PC (not on the server). But the problem is that when I try to execute the application from the windows CE 5.0 device, the application can only connect to the default instance (SQL 2000 and 2005) and can not connect to the named instance (Name: MS2005). Is it some kind of limitation of the SqlClient library for the compact framework?
M doing PDA Project in Vb.net Compact framework [ CF ]. In tht I need to do synchronization My PDA's database with Desktop Computer's database manually. So Plz Suggest me some options ..... One of them I know & Its RAPI.. --> "RAPI allows desktop based applications to talk with CE devices while they're connected to the desktop via ActiveSync".
but M confused regarding ActiveSync Bcoz i want to do it Manually.
I'm trying to retrieve an image that I have stored in a SQL Server db, and display it in an .aspx page. It's supposed to retrieve just one image, according to a unique key that's passed. However, when I view the page, nothing appears... just the Internet Explorer missing image placeholder. I've tried code from several diff tutorials, and can't seem to get it to work. I'm aware that some people think it's not a good idea to store images in a db, but I have to in this case, since the requirements for this project are that the images are stored in the database. I already know how to store references to file paths of images located in a server folder. I've just never done it this way... storing the whole images in the database. The table has 3 columns, one for the id, "FileType" stores the image type, and the "ImageBinary" is the image itself. If anyone can shine some light on why my code doesn't display anything, I'd greatly appreciated your help.
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim myConnection As New SqlConnection(ConfigurationSettings.AppSettings("strConn")) Response.Write("Page Loaded") 'This is just for testing to see if the page loads at all Dim myCommand As New SqlCommand("Select * from UserImages WHERE id=1234", myConnection) Try myConnection.Open() Dim DR As SqlDataReader DR = myCommand.ExecuteReader(CommandBehavior.CloseConnection) If DR.Read() Then Response.ContentType = DR.Item("FileType") Response.BinaryWrite(DR("ImageBinary")) Else Response.Write("no image found") End If myConnection.Close() Response.Write("<br>Image successfully retrieved!") Catch SQLexc As SqlException Response.Write("Read Failed : " & SQLexc.ToString()) End Try End Sub
Hi,This is driving me nuts, I have a table that stores notes regarding anoperation in an IMAGE data type field in MS SQL Server 2000.I can read and write no problem using Access using the StrConv function andI can Update the field correctly in T-SQL using:DECLARE @ptrval varbinary(16)SELECT @ptrval = TEXTPTR(BITS_data)FROM mytable_BINARY WHERE ID = 'RB215'WRITETEXT OPERATION_BINARY.BITS @ptrval 'My notes for this operation'However, I just can not seem to be able to convert back to text theinformation once it is stored using T-SQL.My selects keep returning bin data.How to do this! Thanks for your help.SD
The ERP manufacturer used an image data type to store large text data fields. I am trying to move these data types from one database to another database using either Sql Queries or MS Access. I can cast them as an 8000 char varchar to read them directly but have no luck importing into these image data fields.
Access and Crystal are not able to read these fields directly.
Any suggestions? Most information about these fields has to do with loading files but I am just moving data.
