i'm trying to read an image file from a database(ms-sql, .mdf) with type image. Anyone have any ideas on how to do this? I have a table adapter created but could not assign it to my byte[] variable. Thanks in advance.
View 1 RepliesI have followed many examples found on this site, but still get an invalid cast execption when I attempt to run code below. the exception is thrown when I try to convert the sql image to a byte[] in the download section of the code.
//
// sqlUploadImage
//
this.sqlUploadImage.CommandText = "INSERT INTO Image_Table (Description, Type, Lenth, DocName) VALUES (@Description," +
" @Type, @Length, @DocName)";
this.sqlUploadImage.Connection = this.sqlConnection2;
this.sqlUploadImage.Parameters.Add(new System.Data.SqlClient.SqlParameter("@Description", System.Data.SqlDbType.VarChar, 50, "Description"));
this.sqlUploadImage.Parameters.Add(new System.Data.SqlClient.SqlParameter("@Type", System.Data.SqlDbType.VarChar, 50, "Type"));
this.sqlUploadImage.Parameters.Add(new System.Data.SqlClient.SqlParameter("@Length", System.Data.SqlDbType.Int, 4, "Lenth"));
this.sqlUploadImage.Parameters.Add(new System.Data.SqlClient.SqlParameter("@DocName", System.Data.SqlDbType.VarChar, 50, "DocName"));
this.sqlUploadImage.Parameters.Add(new System.Data.SqlClient.SqlParameter("@Image", System.Data.SqlDbType.Image, 16, "ImgField"));
this.Button2.Click += new System.EventHandler(this.Button2_Click);
//
// sqlDownLoadImage
//
this.sqlDownLoadImage.CommandText = "SELECT Image_Table.* FROM Image_Table";
this.sqlDownLoadImage.Connection = this.sqlConnection2;
//upload file
private void Button1_Click(object sender, System.EventArgs e)
{
//Get the filename of the pdf file to be uploaded.
string strFilename = File1.PostedFile.FileName.Substring(File1.PostedFile.FileName.LastIndexOf("\") +1);
//Get the file type
string strFileType = File1.PostedFile.ContentType;
//Get the file size
int intImageSize = File1.PostedFile.ContentLength;
// Reads the Image
Stream ImageStream = File1.PostedFile.InputStream;
byte[] ImageContent = new byte[intImageSize + 1];
int intStatus = 0;
intStatus = ImageStream.Read(ImageContent, 0, intImageSize);
//Response.Write(strFilename.ToString());
//Response.Write("<br>Image Type: " + strFileType.ToString());
//Response.Write("<br>Image Size: "+intImageSize.ToString());
this.sqlUploadImage.Parameters["@Description"].Value = strFilename;
this.sqlUploadImage.Parameters["@Type"].Value = strFileType;
this.sqlUploadImage.Parameters["@Length"].Value = intImageSize;
this.sqlUploadImage.Parameters["@DocName"].Value = "TestPDF";
this.sqlUploadImage.Parameters["@Image"].Value = ImageContent;
try
{
this.sqlConnection2.Open();
this.sqlUploadImage.ExecuteNonQuery();
this.Label2.Text = "File Uploaded Successfully";
this.Button2.Visible = true;
}
catch(SqlException ex)
{
Response.Write(ex.ToString());
}
finally
{
this.sqlConnection2.Close();
}
}
//download file
private void Button2_Click(object sender, System.EventArgs e)
{
try
{
this.sqlConnection2.Open();
SqlDataReader r = this.sqlDownLoadImage.ExecuteReader(CommandBehavior.CloseConnection);
if(r.Read())
{
Response.ContentType = r["Type"].ToString();
byte[] image = (byte[])r["ImgField"];
Response.BinaryWrite(image);
}
}
catch(SqlException ex)
{
Response.Write(ex.ToString());
}
finally
{
this.sqlConnection2.Close();
}
}
Hay Friend's
Can u plese send me the way how to save image in sql server and display that images in datagrid or other control also like Image control or Image control Button?? Plese send the coding in C#.
Thank's
Amit
Why can varchar datatype variable only 4000 byte?
For example:
in a storedprocedure
declare @aa varchar(8000)
......
while
select @aa=@aa+@otherinfo
end
when the length is more than 4000 ,the data in the behind will be lost
hi
i am getting an error with my code, it says 'value of type byte canot be converted to 1 dimensional array of byte' do you know why and how i can correct this error, the follwoing is my code.
can anyone help me correct the error and let me know ow to solve it
thanks for any help givenPublic Sub ProcessRequest(ByVal context As HttpContext) Implements IHttpHandler.ProcessRequestDim myConnection As New Data.SqlClient.SqlConnection("ConnectionString")
myConnection.Open()
Dim sql As String = "Select Image_Content from ImageGallery where Img_Id=@ImageId"Dim cmd As New Data.SqlClient.SqlCommand(sql, myConnection)cmd.Parameters.Add("@imgID", Data.SqlDbType.Int).Value = context.Request.QueryString("id")
cmd.Prepare()Dim dr As Data.SqlClient.SqlDataReader = cmd.ExecuteReader()
dr.Read()
context.Response.ContentType = dr("imgType").ToString()context.Response.BinaryWrite(CByte(dr("imgData"))) ----- this is the line with the error
End Sub
When I am trying to save byte[] of an image to SQL server which is having an image column, I am getting an error like this " A severe error occured on the current command. The results, if any, should be discarded.". I am trying to save through a stored procedure.
In the sp also, the datatype is image.
Can you give a reply to this?
How to save image file to database?
Which control use best?
Hi,
I have to store images in database. I have a table which contains field picture which is an image.
How can I do this using C# ?
In Visual Studio .NET i found a code how to obtain BLOB values from the database but I do not know how to do upload an image to the database.
Thanks in advance for your help.
Rafi
I have a table with two fields Part_num and Pic in SQL server 2000 Pic is of Image type. Is there a way I can save images for each part_num using Query analyzer?
View 6 Replies View RelatedI am trying to save an uploaded image and its associated info to sql server database using a stored procedure but keep getting trouble. When trying to save, the RowAffected always return -1. but when i debug it, I dont' see problem both from stored procedure server
explore and codebehind. it looks to me every input param contains correct value(such as the uploaded image file name, contentType and etc). well, for the imgbin its input param value returns something like "byte[] imgbin={Length=516}". Below is my code, could anyone help to point out what did I do wrong?
Thank you.
================================================
CREATE PROCEDURE [dbo].[sp_SaveInfo]
(
@UserID varchar(12),
@Image_FileName nvarchar(50),
@Image_ContentType nvarchar(50),
@Image_ImageData image,
@Create_DateTime datetime)
AS
set nocount on
insert ExpertImage(UserID, Image_FileName, Image_ContentType, Image_ImageData, Image_ReceiveDateTime)
values(@UserID, @Image_FileName, @Image_ContentType, @Image_ImageData, @Create_DateTime)
GO
private void Submit1_ServerClick(object sender, System.EventArgs e)
{
if(Page.IsValid)
{
Stream imgStream = File1.PostedFile.InputStream;
int imgLen=File1.PostedFile.ContentLength;
string imgContentType = File1.PostedFile.ContentType;
string imgName = File1.PostedFile.FileName.Substring(File1.PostedFile.FileName.LastIndexOf("\") + 1);
byte[] imgBinaryData = new byte[imgLen];
int n=imgStream.Read(imgBinaryData, 0, imgLen);
int RowsAffected = SaveInfo(imgName,imgBinaryData, imgContentType);
if(RowsAffected > 0)
{
..
}
else
{
..
}
}
}
public int SaveInfo(string imgName, byte[] imgbin, string imgcontenttype)
{
SqlConnection objConn = new DSConnection().DbConn;
SqlCommand objCMD = new SqlCommand("sp_SaveInfo", objConn);
objCMD.CommandType = CommandType.StoredProcedure;
objCMD.Parameters.Add("@UserID", SqlDbType.VarChar, 12);
objCMD.Parameters["@UserID"].Value = txtMemberID.Text.ToString();
objCMD.Parameters["@UserID"].Direction = ParameterDirection.Input;
objCMD.Parameters.Add("@Create_DateTime", SqlDbType.DateTime);
objCMD.Parameters["@Create_DateTime"].Value = DateTime.Now.ToLongTimeString();
objCMD.Parameters["@Create_DateTime"].Direction = ParameterDirection.Input;
objCMD.Parameters.Add("@Image_FileName", SqlDbType.NVarChar, 50);
objCMD.Parameters["@Image_FileName"].Value = imgName;
objCMD.Parameters["@Image_FileName"].Direction = ParameterDirection.Input;
objCMD.Parameters.Add("@Image_ContentType", SqlDbType.NVarChar, 50);
objCMD.Parameters["@Image_ContentType"].Value = imgcontenttype;
objCMD.Parameters["@Image_ContentType"].Direction = ParameterDirection.Input;
objCMD.Parameters.Add("@Image_ImageData", SqlDbType.Image);
objCMD.Parameters["@Image_ImageData"].Value = imgbin;
objCMD.Parameters["@Image_ImageData"].Direction = ParameterDirection.Input;
int numRowsAffected = objCMD.ExecuteNonQuery();
return numRowsAffected;
}
I have to access a web service where I pass in a product number and it produces an XML result with an /image section where it has a long string (base64?) Â Â I am trying to call the web service and save the image to the OS.
I am trying to get the result into a variable and save it to disk with  the itemno.jpg as the name
This is a sample file I get back..
<NewDataSet>
 <Table>
  <ITEMNO>2065</ITEMNO>
  <Image>/9j/4QAYRXhpZgAASUkqAAgAAAAAAAAAAAAAAP/sABFEdWNr ...  removed since too long for post  ...</Image>
  <ImageDate>2015-04-15T00:00:00+00:00</ImageDate>
 </Table>
</NewDataSet>
I'm just wondering if we can save sql aggregate functions into a variable. I have this query:select company, dept, sum(pers) as pers1, sum(amount) as amount1,sum(amount)/sum(pers) as wage from xxtestsumgroup by company, dept instead of calling sum(amount) and sum(pers) again in "sum(amount)/sum(pers) as wage",I would like to save them in some kinda variable in the select clause so it will save process time.Sorry but im new to sql programming. So thx for your understanding.
View 2 Replies View Related how do you store a datareader propety to a variable? Below is my current code. I have already declared my connectionString and sqlComm objects, as well as the userName and such. I need to store the value from the dr to the variables, UserName, UserPass, and serverName. ThanksTry
sqlCon.Open()
dr = sqlComm.ExecuteReader
While dr.Read
userName = dr("uName").ToString
LogInfo("userName = " & userName)
userPass = dr("uPass").ToString
LogInfo("userPass = " & userPass)
serverName = dr("sName").ToString
LogInfo("serverName = " & serverName)
End While
dr.Close()
Catch obug As Exception
LogEvent("Credentials Error: " & obug.Message)
Finally
sqlCon.Close()
End Try
I€™ve inherited a project from one of the guys on our team who will be out sick for a while. He developed two for marshaling data between System.Drawing.Image and System.Byte(). He€™s storing the byte array data in a database image field.
I€™ve retrieved the byte array data from his database image fields and have successfully converted them to images using his ConvertByteArrayToImage method below. I have also converted and image to a byte array with his ConvertImageToByteArray method below and succfully stored the data in a database image field. However, when I retrieve the byte array data that I stored in the database the last line in his ConvertByteArrayToImage method throws an exception (Parameter is not valid). I€™ve not been able to find a working copy of his code that€™s storing the byte array data. Does anyone see anything I€™m overlooking?
Imports System.Drawing
Imports System.IO
Public Sub InsertImage(ByVal pFilename As String)
Try
Dim lImage As Image
Dim lBA() As Byte
Dim lSQL As String
Dim lQuery As Alcon.SQLServer.Database.clsQuery
Dim lParameters As New Alcon.SQLServer.Database.clsParameters
lImage = Image.FromFile(pFilename)
ConvertImageToByteArray(lImage, lBA)
' Initialization
lQuery = New Alcon.SQLServer.Database.clsQuery(mConnection)
lSQL = ""
lSQL += "INSERT INTO [TBL_PCL_LENS_DATA]("
lSQL += "[SerialNumber], "
lSQL += "[ProcessedDate], "
lSQL += "[CartonLabelImage]) "
lSQL += "VALUES ("
lSQL += "@SerialNumber, "
lSQL += "@ProcessedDate, "
lSQL += "@CartonLabelImage "
lSQL += ")"
lParameters.Add("@SerialNumber", SqlDbType.VarChar, ParameterDirection.Input, mSerialNumber)
lParameters.Add("@ProcessedDate", SqlDbType.DateTime, ParameterDirection.Input, Now)
lParameters.Add("@CartonLabelImage", SqlDbType.Image, ParameterDirection.Input, lBA)
' Execute query
lQuery.Execute(lSQL, lParameters)
Catch ex As Exception
Throw
End Try
End Sub
ConvertByteArrayToImage(ByVal pBA() As Byte, ByRef pImage As Image)
Try
' Declaration
Dim lMS As MemoryStream
' Initialization
lMS = New MemoryStream(pBA, 0, pBA.Length)
lMS.Write(pBA, 0, pBA.Length)
lMS.Position = 0
' Create image
pImage = Image.FromStream(lMS, True)
Catch ex As Exception
Throw
End Try
End Sub
ConvertImageToByteArray(ByVal pImage As Image, ByRef pBA() As Byte)
Try
' Declaration
Dim lBM As Bitmap
Dim lBR As BinaryReader
Dim lMS As New MemoryStream
' Initialization
lBM = New Bitmap(pImage)
lBM.Save(lMS, Imaging.ImageFormat.Png)
lBR = New BinaryReader(lMS)
' Create byte array
pBA = lBR.ReadBytes(lMS.Length)
Catch ex As Exception
Throw
End Try
End Sub
I have below code:
WHILE i < total_rows DO
SET @param_employee_number = (SELECT employee_number FROM earned_leaves LIMIT i,1);
PREPARE query_statement FROM 'CALL sp_populate_leave_summary(?)';
EXECUTE query_statement USING @param_employee_number;
-- UPDATE earned_leaves SET earned_leave = returned_by_EXECUTE
SET i = i + 1;
END WHILE;
I want to save the value returned by the EXECUTE into a variable in order to use it in the next UPDATE statement.
Hi, I have a problem importing data from SQL Server 2000 'text' columns to SQL Server 2005 nvarchar(max) columns. I get the following error when encountering a transfer of any column that matches the above.
The error is copied below,
Any help on this greatly appreciated...
ERROR : errorCode=-1071636471 description=An OLE DB error has occurred. Error code: 0x80004005.An OLE DB record is available. Source: "Microsoft SQL Native Client" Hresult: 0x80004005 Description: "Unicode data is odd byte size for column 3. Should be even byte size.". helpFile=dtsmsg.rll helpContext=0 idofInterfaceWithError={8BDFE893-E9D8-4D23-9739-DA807BCDC2AC} (Microsoft.SqlServer.DtsTransferProvider)
Many thanks
Hi,
I have a website and i am uploading the gif image to the database. i have used varchar(500) as the datatype and i am saving the file in the webserver so the path to it c:intepub....a.gif
my upload table has the folliwing feilds
UploadId Int Identity, Description, FileName, DiskPath varchar(500), weblocation varchar(500). I have a main sproc for the report where i am doing a inner join with other table to get the path of the gif..
So my question is how can i get a picture to show up on the report. .
What kinda datatype the gif file should be stored in the database? If it is stored as a varchar how can i access it and what is best way to reference that particular.
any help will appreciated....
Regards
Karen
I have a set of .dtsx files that connect to an Oracle database. The Oracle username and pw values are saved in variables set up in the .dtsx files. These two variables do not have expressions, rather, these two variables feed other variables and their expressions.Theses files are now moving from one environment to another and the Oracle username and pw must be updated to connect to the new Oracle environment.
Upon updating the variables, the packages expressions update as expected, however, when saving the file to disk, the updated variables aren't saved and the values revert back to the original values.
How are variables updated in .dtsx packages that will allow changes to be saved?
I have image type col.I'm trying to do the following,DECLARE @Data varbinary(16)SET @Data = (select imageCol from Table1 where id=3)As image datatype returns varbinary value, so I want to store image col value to a varbinary variable(or any other type variable, eg., varchar). But getting following error,========================================Server: Msg 279, Level 16, State 3, Line 2The text, ntext, and image data types are invalid in this subquery or aggregate expression.========================================Is there anyway to store image datatype value to a variable?Cheers.
View 2 Replies View RelatedHello:I didn't find any documentation that notes save point names are casesensitive, but I guess they are...Stored Proc to reproduce:/* START CODE SNIPPET */If Exists (Select * From sysobjects Where Type = 'P' and Name ='TestSaveTran')Drop Procedure dbo.TestSaveTranGoCreate Procedure dbo.TestSaveTranAsBeginDeclare@tranCount int--Transaction HandlingSelect @tranCount = @@TRANCOUNTIf (@tranCount=0)Begin Tran localtranElseSave Tran localtranBegin Try--Simulate Error While ProcessingRAISERROR('Something bad happened', 16, 1)/*If this proc started transaction then commit it,otherwise return and let caller handle transaction*/IF (@tranCount=0)Commit Tran localtranEnd TryBegin Catch--Rollback to save pointRollback Tran LOCALTRAN --<< NOTE case change--Log Error--Reraise ErrorEnd CatchEndGo--Execute Stored ProcExec dbo.TestSaveTran/*Should receive the following message:Cannot roll back LOCALTRAN. No transaction or savepoint of that namewas found.*//* END CODE SNIPPET */What is really strange, if there is a transaction open, then no erroris thrown. So if you execute as so:/* START CODE SNIPPET */Begin Tran--Execute Stored ProcExec dbo.TestSaveTran/* END CODE SNIPPET */There is no "Cannot roll back LOCALTRAN...." message.Questions:1-)Can someone confirm save point names are case sensitve and this isnot happening because of a server setting?2-)Is this a logic error that I am not seeing in the example codeabove?We have changed our code to store the save point name in a variable,which will hopefully mitigate this "problem".Thx.
View 4 Replies View RelatedHi,
I need to save all the DML related queries which is executed in my Database
how can i do it?
what are the possible ways to do it.
The XML generated by notifications object needs to be saved. Where do I save it - in the database. That will still be stored in a table - with drawbacks!
View 6 Replies View Relatedi have an xml file, it looks like this:
<?xml version="1.0" encoding="ISO-8859-1"?><shiporder orderid="889923" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="shiporder.xsd"> <orderperson>John Smith</orderperson> <shipto> <name>Ola Nordmann</name> <address>Langgt 23</address> <city>4000 Stavanger</city> <country>Norway</country> </shipto> <item> <title>My Title</title> <quantity>1</quantity> <price>10.12</price> </item> <item> <title>Hide your heart</title> <quantity>1</quantity> <price>9.90</price> </item></shiporder>
how can i save this into a database(Sql) using a procedure
or..there is another way to do this?
im a newbie
Hi all,
Can someone please brief me on how to save 'pdf' files(there are about 15 files) into a SQL database and retrieve/open it from a datagrid?
I have about 15 pdf files on my webserver and need to save it in the SQL database, so every pdf file saved in the database will have a primary key and the file will be saved either as 'ntext' or 'binary' type...I just have this rough idea.
If someone has a ready code in VB.net then nothing better( i know thats a shortcut :) but it will help me like a tutorial. C# code will do too, I can then convert the code to Vb.net
Thanks a ton.
1-I want to save records from a table located in my database1 on Server1 to a non existing table in another database2 in another server2. (The destination table doesn t exist, I want it to be created with T-SQL). How can I do that using T-SQL
2- Also, is there an other better practice to back up my table before I do some dammage inintentially and destroy the table or the records forever or does SQL server do that automatically for us.
Thanks a lot for your advice.
Hello,
A database EntryForm has a MenuStrip. How could the Menustrip implemented that it would have a Save and Restore data to the database for backup purposes?
What is the Menustrip for? None of the standard Items seems to work. What can be printed or previewed?
This question is NOT about how to save the data into the database from the EntryForm.
Thanks for any answer,
(VB 2005 Express) I have a textbox linked to a DataTable (database). I want to save its text into the database as a new row. What is the VB code? The following is not working.
Me.Validate()
Me.myDataTableBindingSource.EndEdit()
Me.myDataTableTableAdapter.Update(Me.myDatabaseDataSet.myDataTable)
Thanks for any help.
Hi,
I'm using Visual Studio and Visual Basic to save data about members in a database.
I use SQL-database as it's included.
However, I'm new to this saving in the datbase and wonder how I can at the best save data about a member without having to index each value in the arrays:
The array has 2 index and is declared
dim Results(6, 50) as string
Of course, I can do results11, results12,... results150, results21, ...results250....
But it seems rather awkward to do it this way. I'm sure that there is a better way.
Thanks, any assistance is appriciated!
Best wishes, Per
I am new to sql sever management studio express, but a long time query analyzer user. This is a very basic question.
I want to change the default directory in sql server management studio express so that when I go to save a query, it is already pointed to the correct one. Where do I change that?
Thanks,
Nanci
Hi,
I want to upload a file (e.g. .xls, .pdf, .doc) and save into the Sql Server 2000 database through the web interface, and then to download this file. Any idea???
I have a sql table in which field ExchangeRate is defined as float. When i tries to enter data into ExchangeRate field using LINQ i get follwoing error.
"String or binary data would be truncated.The statement has been terminated."
My code is as follows
ExchangeRate = float.Parse(txtRate.Text)
I tried with
ExchangeRate = double.Parse(txtRate.Text)
I would appreciate any help.
Hi
I have problem in the data when I save it in database !!!
From Windows Application I Send (nText) Data to SQL Server Database in Web Server but when I try to explore it in SQL Server Enterprise manager or ny SQL Server DB Manager I see the Fields of (nText) Data is empty but when I try to brows the data in ASP.NET page I get it like the following
??? ??? ??? ????? ??????? ?? ??? ??? ?????, ????? ?????? ?????? ?????? ?????????. ????
??????". ?? ????????? ???? ???? ????? ?????, ?? ????? ??????? ??????.
???? ????, ??????? ??? ??? ??????? ?????, ??? ???? ?? ?????? ?? ????? ??????
So I thing the data has been damaged!!
Why this problem... And how can I solve it??
The Problem only in (nText) Data ..
And thanks with my best regarding??
Hi !
I am creating a website with a form that users can fill up the
information. This form is about the school's information of the users.
After fill up this form, the users will have to click the submit button
that will submit the form to be saved in a database.
I have created the database for that form. My question is how can I
save the result of this form to my database. Let's say I have 5
textboxes in that form, name, school's name, school's address, major,
and comments.
thanks a lot in advanced!