Retrieiving Binary Data

Mar 29, 2008

 

Hello All, I am using a stored procedure. In that stored procedure I am passing the name of a table as an argument. and after executing that procedure, it gives me the 'Insert' query of each and every row. So if I have 10 records, then the procedure will give me 10 'Insert' queries with its table values. There is a image datatype in last column of my table. and i am not able to fetch that binary data of that table. Can anybody tell me what is the problem with my stored proce. given below :: ALTER PROCEDURE [dbo].[SP_Generate_Insert_Statements_Testing]

@strTableName varchar(128), -- used to specify the table to generate data for

@RequiredGo bit = 0 -- used to allow GO statements to separate the insert statements

AS

 

--Variable declarations

DECLARE @InsertStmt varchar(max)

DECLARE @Fields varchar(8000)

DECLARE @SelList varchar(max)

DECLARE @ColName varchar(128)DECLARE @IsChar tinyint

DECLARE @tableData varchar(8000)

DECLARE @strImageSQL varchar(200)

DECLARE @strTextSQL varchar(200)

DECLARE @ImageData varbinary(8000)

DECLARE @TextData varchar(max)

DECLARE @bitIdentity BIT

 

SET NOCOUNT OFF

 

SELECT @bitIdentity = OBJECTPROPERTY(OBJECT_ID(TABLE_NAME), 'TableHasIdentity')

FROM INFORMATION_SCHEMA.TABLESWHERE TABLE_Name =@strTableName

 

PRINT '---- ** Start of Inserts ** ----'

PRINT ''

 

IF @bitIdentity = 1

BEGIN

PRINT 'SET IDENTITY_INSERT [' + @strTableName +'] ON '

END

 

--initialize variables

SELECT @InsertStmt = 'INSERT INTO [' + @strTableName + '] (',

@Fields = '',

@SelList = 'SELECT '

 

 

--create a cursor that loops through the fields in the table

--and retrieves the column names and determines the delimiter type that the field needs

DECLARE CR_Table CURSOR FAST_FORWARD FOR

 

SELECT COLUMN_NAME,

'IsChar' = CASEWHEN DATA_TYPE in ('int', 'money', 'decimal', 'tinyint', 'smallint' ,'numeric', 'bit', 'bigint', 'smallmoney', 'float','timestamp') THEN 0

WHEN DATA_TYPE in ('char', 'varchar', 'nvarchar','uniqueidentifier', 'nchar') THEN 1WHEN DATA_TYPE in ('datetime', 'smalldatetime') THEN 2

WHEN DATA_TYPE in ('text', 'ntext') THEN 3WHEN DATA_TYPE in ('sql_variant') THEN 4

WHEN DATA_TYPE in ('image') THEN 5ELSE 6

END

FROM INFORMATION_SCHEMA.COLUMNS c WITH (NOLOCK)

INNER JOIN syscolumns sc WITH (NOLOCK)

ON c.COLUMN_NAME = sc.name

INNER JOIN sysobjects so WITH (NOLOCK)ON sc.id = so.id

AND so.name = c.TABLE_NAMEWHERE table_name = @strTableName

AND DATA_TYPE <> 'timestamp'AND sc.IsComputed = 0

ORDER BY ORDINAL_POSITIONFOR READ ONLYOPEN CR_Table

 

FETCH NEXT FROM CR_Table INTO @ColName, @IsChar

 

WHILE (@@fetch_status <> -1)

BEGIN

 IF @@fetch_status <> -1

BEGINIF @SelList = 'SELECT'

BEGIN

SELECT @Fields = @Fields + '[' + @ColName + ']' + ', 'SELECT @SelList = CASE @IsChar

WHEN 1 THEN @SelList + ' ISNULL('''''''' + REPLACE(['+ @ColName + '],'''''''', '''''''''''' ) + '''''''',''NULL'') ' + ' COLLATE database_default + '

WHEN 2 THEN @SelList + 'ISNULL('''''''' + CONVERT(VARCHAR(20),['+ @ColName + '])+ '''''''',''NULL'') ' + ' COLLATE database_default + '

WHEN 3 THEN @SelList + ' ISNULL('''''''' + REPLACE(CONVERT(VARCHAR(MAX),['+ @ColName + ']),'''''''', '''''''''''')+ '''''''' ,''NULL'') '+ ' COLLATE database_default + '

--WHEN 3 THEN @SelList + ''' CONVERT(VARCHAR(MAX),['+ @ColName + ']) '''

WHEN 4 THEN @SelList + ' ISNULL('''''''' + REPLACE(CONVERT(VARCHAR(8000),['+ @ColName + ']),'''''''', '''''''''''')+ '''''''' ,''NULL'') '+ ' COLLATE database_default + '

WHEN 5 THEN @SelList + '''MyImageData'''''

ELSE @SelList + ' ISNULL(CONVERT(VARCHAR(2000),['+ @ColName + '],0),''NULL'')' + ' COLLATE database_default + ' END

END

ELSE

BEGIN

SELECT @Fields = @Fields + '[' + @ColName + ']' + ', 'SELECT @SelList = CASE @IsChar

WHEN 1 THEN @SelList + ''',''' + ' + ' + ' ISNULL('''''''' + REPLACE(['+ @ColName + '],'''''''', '''''''''''' ) + '''''''',''NULL'') ' + ' COLLATE database_default + '

WHEN 2 THEN @SelList + ''',''' + ' + ' + 'ISNULL('''''''' + CONVERT(VARCHAR(20),['+ @ColName + '])+ '''''''',''NULL'') ' + ' COLLATE database_default + '

WHEN 3 THEN @SelList + ' ISNULL('''''''' + REPLACE(CONVERT(VARCHAR(MAX),['+ @ColName + ']),'''''''', '''''''''''')+ '''''''' ,''NULL'') '+ ' COLLATE database_default + '

--WHEN 3 THEN @SelList + ''' CONVERT(VARCHAR(MAX),['+ @ColName + ']) '''

WHEN 4 THEN @SelList + ''',''' + ' + ' + ' ISNULL('''''''' + REPLACE(CONVERT(VARCHAR(8000),['+ @ColName + ']),'''''''', '''''''''''')+ '''''''' ,''NULL'') '+ ' COLLATE database_default + '

WHEN 5 THEN @SelList + ''',''' + '''MyImageData'''''

ELSE @SelList + ''',''' + ' + ' + ' ISNULL(CONVERT(VARCHAR(2000),['+@ColName + '],0),''NULL'')' + ' COLLATE database_default + ' END

ENDIF @IsChar = 5

SET @strImageSQL = 'SELECT ' + @ColName + ' FROM ' + @strTableName

END

 

FETCH NEXT FROM CR_Table INTO @ColName, @IsChar

END

 

CLOSE CR_TableDEALLOCATE CR_Table

 

SELECT @Fields = SUBSTRING(@Fields, 1,(len(@Fields)-1))

SELECT @SelList = SUBSTRING(@SelList, 1,(len(@SelList)-1))

SELECT @SelList = @SelList + ' FROM ' + @strTableNameSELECT @InsertStmt = @InsertStmt + @Fields + ')'

 

SET NOCOUNT ON

--now we need to create and load the temp table that will hold the data

--that we are going to generate into an insert statement

 

CREATE TABLE #TheData (TableData varchar(MAX))

INSERT INTO #TheData (TableData) EXEC (@SelList)

IF @strImageSQL <> ''

BEGIN

CREATE TABLE #ImageData (TableData image)

INSERT INTO #ImageData (TableData) EXEC (@strImageSQL)

END

--Cursor through the data to generate the INSERT statement / VALUESDECLARE CR_Data CURSOR FAST_FORWARD FOR SELECT TableData FROM #TheData FOR

READ ONLY

OPEN CR_Data

FETCH NEXT FROM CR_Data INTO @tableDataIF @strImageSQL <> ''

BEGIN

DECLARE CR_ImageData CURSOR FAST_FORWARD FOR SELECT TableData FROM #ImageData FORREAD ONLY

OPEN CR_ImageDataFETCH NEXT FROM CR_ImageData INTO @ImageData

END

 

WHILE (@@fetch_status <> -1)

BEGIN

IF (@@fetch_status <> -2)BEGIN

IF @strImageSQL <> ''

BEGINPRINT @InsertStmt

PRINT 'VALUES '

PRINT '('

PRINT SUBSTRING(@tableData,1,CHARINDEX('MyImageData',@tableData)-2)PRINT @ImageData

PRINT SUBSTRING(@tableData,CHARINDEX('MyImageData',@tableData) + 12,LEN(@tableData))

PRINT ')' + CHAR(13)

END

ELSE

PRINT @InsertStmt + ' VALUES (' + @tableData + ')' + CHAR(13)

 

 IF @RequiredGo = 1

PRINT 'GO'

 

ENDFETCH NEXT FROM CR_Data INTO @tableData

IF @ImageData <> '' FETCH NEXT FROM CR_ImageData INTO @ImageData

 

-- IF @TextData <> ''

-- FETCH NEXT FROM CR_TextData INTO @TextData

END

CLOSE CR_Data

DEALLOCATE CR_DataIF @ImageData <> ''

BEGINCLOSE CR_ImageData

DEALLOCATE CR_ImageDataEND

 

IF @bitIdentity = 1

BEGIN

PRINT 'SET IDENTITY_INSERT [' + @strTableName + '] OFF '

END

 

PRINT '---- ** End of Inserts ** ----'

RETURN (0)

 

=========== End of Procedure =======================

Any help will be appreciated.

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'convert the content to a binary stream.
Dim ms As New System.IO.MemoryStream
Dim bf As New BinaryFormatter
bf.Serialize(ms, Content)
ms.Position = 0


Dim oConn As SqlConnection = New SqlConnection(ConfigurationSettings.AppSettings("ConnectionString"))
Dim cmd As New SqlCommand("sproc_Content_Insert", oConn)
With cmd
.CommandType = CommandType.StoredProcedure
.Parameters.Add("@ContentName", ContentName)
.Parameters.Add("@ContentDesc", ContentDesc)
.Parameters.Add("@ContentType", ContentType)
.Parameters.Add("@Content", ms.ToArray)
.Parameters.Add("@LocationID", LocationID)
End With
oConn.Open()
cmd.ExecuteNonQuery()
oConn.Close()
oConn.Dispose()
cmd.Dispose()

bf = Nothing
ms = Nothing

End Sub

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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.Data.SqlClient.SqlException: String or binary data would be truncated.Source Error:



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Line 125:// Update data source
Line 126:dbAdapt.Update(dbSet,"tblFile1");
Line 127:
Line 128:// Get newFileID
i donno what this means :(
well the code is like this
private void Button1_Click(object sender, System.EventArgs e)
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HttpPostedFile myFile = filMyFile.PostedFile;
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}
 
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