SQL Binary To C# Byte[]
I have a binary column with length 20 in SQL server table. I store dynamically C# byte[] value range from 0 to 19. So for example, If I store length of 16 and when I try to retrive it back into byte [] in C# it returns whole length 20. When I see in debug it has value from 0 to 15 which I want to use but from 16 to 19 is zero. How can I get just length value which I stored.
I use DataRow to get whole row and from the row object I extract byte [] based on column name.
Thank you in advance....
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Hi, I have developed a custom server control for .NET Framework 2.0. The server control has a property named BinaryData of type byte[]. I marked this property to be data bindable. Now, I have varbinary(Max) type of field in my SQL Database and I have used SQLDataSource and bound this varbinary(Max) field with the property BinaryData (byte[]) of my control. It is working fine as long as the data value is not NULL. Now, In my control, I have handled the NULL value so that no Exception is thrown. Still, when I bind this property using the SQLDataSource, I get Error "Unable to cast object of type 'System.DBNull' to type 'System.Byte[]'." I am not sure if I can do anything to stop this erro within my control. If it is not possible from the control, then what is the workaround that I can do in my ASPX page in order to stop this error ? Thanks a lot in advance.
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Binary
i am using asp.net 2.0 with c#. i have database - mssql server. in that i have tuser table in that table i have password feild which datatype is Binary. when i am entered password in asp.net application that time runtime error is convert the string to binary. my code is---string myByte = Stingtest; System.Text.ASCIIEncoding encoding = new System.Text.ASCIIEncoding();Byte[] bytes = encoding.GetBytes(myByte);myByte = ""; myByte = encoding.GetString(bytes); objClsDllSql.sqlCon = objReadIniFile.funReadIniSql(); objClsDllSql.sqlCon.Open();objVarIni.sqlDA = new SqlDataAdapter("select * from tUser ", objClsDllSql.sqlCon); objVarIni.sqlDA.Fill(objVarIni.sqlDS, "tUser"); objVarIni.sqlDT = objVarIni.sqlDS.Tables["tUser"]; strSqlCmdText = "insert into tUser values( " + Convert.ToInt32(txtUserCode.Text) + " , "+ " " + " ' " + txtUserID.Text + " ' " + ", "+" " + " ' " +txtFirstName.Text + " ' " + ", "+ " " + " '" + txtLastName.Text + "'" + ", "+" " + myByte + ", "+ " " + "'" + txtUserType.Text + "'" + ", "+ " " + "'" + dtpWarningDate.SelectedDate + "'" + " , "+ " " + "'" + dtpExpireDate.SelectedDate + "'" + ", "+" " + "'" + drpdwnStatus.SelectedItem.Text + "'" + ", "+ " " + "'" + Session["LoginName"].ToString() + "'" + ", "+" " + "'" + dtpCreateDate.SelectedDate.ToString() + "'" + ", "+ " " + "'" + txtUpDatedBy.Text + "'" + ", "+ " " + "'" + dtpUpdateDate.SelectedDate.ToString() + "'" + ")"; pls help me . its really urgent. gayatri
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Binary Problem
Hy friends!I'm new in WebApplications that have SQL SERVER DB.My problem is that...In the DataBase I have a table with varbinary column and in the program I want save in this column a value of binary[] variable! How I can make it?Another question.... If I want select (by a query in the application) the value of the binary column, where I store it? because if I want select an integer value I take this in a int variable, and if I want select an string value from a DataBase I take this in a string variable..but How I can make it with binary column?Thanks in advance!!
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Binary Data
Hello, I have a table which uses binary data to store passwords. How do I view the contents of the "binary data" column, ie. the passwords? It just shows it as <binary data>?
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Binary Serialization
Hello,I am trying to serialize (binary) a class and save it in a database. I followed a few examples I found in internet and this is what I came up with: 1 ' Rows 2 <Serializable()> _ 3 Public Class Rows 4 Implements ISerializable 5 6 Private _Rows As New Generic.List(Of Row) 7 Public Property Rows() As Generic.List(Of Row) 8 Get 9 Return _Rows 10 End Get 11 Set(ByVal value As Generic.List(Of Row)) 12 _Rows = value 13 End Set 14 End Property ' Rows 15 16 ' New 17 Public Sub New() 18 End Sub ' New 19 20 ' New 21 Public Sub New(ByVal siRows As SerializationInfo, ByVal scRows As StreamingContext) 22 End Sub ' New 23 24 ' GetObjectData 25 Public Sub GetObjectData(ByVal siRows As SerializationInfo, ByVal scRows As StreamingContext) Implements ISerializable.GetObjectData 26 27 siRows.AddValue("Rows", Me.Rows) 28 29 End Sub ' GetObjectData 30 31 Public Sub Serialize(ByVal filename As String) 32 33 Dim sRows As Stream = Stream.Null 34 Try 35 sRows = File.Open(filename, FileMode.Create, FileAccess.ReadWrite) 36 Dim bfRows As New BinaryFormatter 37 bfRows.Serialize(sRows, Me) 38 Finally 39 sRows.Close() 40 End Try 41 42 End Sub ' Serialize 43 44 Public Shared Function Deserialize(ByVal filename As String) As Rows 45 46 Dim sRows As Stream = Stream.Null 47 Try 48 sRows = File.Open(filename, FileMode.Open, FileAccess.Read) 49 Dim bfRows As New BinaryFormatter 50 Return CType(bfRows.Deserialize(sRows), Rows) 51 Finally 52 sRows.Close() 53 End Try 54 55 End Function ' Deserialize 56 57 End Class ' Rows After serializing the class I need to save it in an a SQL 2005 database.But all the examples I followed use the filename ... Anyway, do I need to do something to save this into an SQL 2005 database or can I use it as follows? And how can I use this?This is the first time I do something like this so I am a little bit confused.Thanks,Miguel
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Bit To Binary Problem
I have a field in my database defined as a bit. I need to bind this field to a checkbox I have stored in a datgrid on my webform. I'm having problmes finding the right call in the html <asp:CheckBox id="chkComplexity" runat="server" Width="125px" Text="Complexity"> WHAT TO PUT HERE !?!?! </asp:CheckBox> Any help would be greatly appreciated
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Binary File
Can someone firecct me to instructions on how to download a Binary file in a asp.net application. I have a sql 2000 db that has a field that contains files and my users need access to them via my web app.
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Binary Value Manipulation
I would like to drop the leading 0x on a binary value so I can do abitwise operation.Here is simplified code:select right(0x88186000,8)I expected to get back 88186000, this was not the case. The commandreturned some wierd characters.Am I missing something?
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Q. About Binary Formats.
Is it true that binary and varbinary has a max-kapacity at 8000 bytes? Imjyst unsure how to read the dokumentation and want to be completely sure.And image is only one to use for data aobve that size?Thx in regards for clearing things out for meReagardsAnders
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BitArray To Binary
I want to store a binary string in SqlServer from VB .NET through astored procedure. I have been storing the binary data in a BitArraywhich I am not set on by any means. When I pass the BitArray into astored procedure, which is looking for a variable of type binary, itthrows the following: "Object must implement IConvertible." BitArrayobviously does not implement IConvertable.If anyone has a good way of passing binary data into a storedprocedure through a parameter array I'd appreciate it.
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Varbinary To Binary
Hello, I need to move some values from varbinary field to binary. It doesn't work with simple update. I mean, I check my moved values with a certain string (I use PWDCOMPARE) and they don't match. Please, help.
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Binary Checksum
Hi, Can anyone provide me with the syntax for comparing rows of two tables using binary checksum? The tables A and B have 8 & 9 columns respectively. The PK in both cases is Col1 & Col2. I want checksum on Columns 1 to 8. Thanks
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Binary Data Into SQL 6.5
How does one go about getting a graphic image into SQL Server 6.5. For example, let`s say I have a company logo that I want to include in a company profile table to be used on some reports. The graphic is now a .BMP or .GIF or .JPG file. I just do not have a clue how this works. Bob
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BCP Binary To Dictionary
When copying data from one server (Binary sort) to another server (dictionary,case insensitive) using BCP, what switches should be used in the BCP command? Will the "Native" switch, -n, somehow preserve the source data characteristics? I just want plain text to read into the new server. Thanks.
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Binary Data
We have a dll that sends a hexadecimal data (const. length) to MS SQL Server database. It's declared as String in VB, the db column data type is binary. Here is the SQL String that has been executed successfully in Query Analyzer: "declare @MyHAX varchar(32) select @MyHAX='0x3236374535454337363145313430463742394545 413443473230343544320000' insert MyTABLE (MyCOLUMN) values (convert (binary(32),@MyHAX))" When I am trying to do the same thing in the insert stored procedure, I get an error message: "Disallowed implicit conversion from data type varchar to data type binary, table 'MyDB.dbo.MyTABLE', column 'MyCOLUMN'. Use the convert function to run this query." Does anyone know how can I insert my binary data?
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Binary Primary Key
I have a 256 bit hash value to identify chunks of data. Would it be a good idea to create a 32-byte binary field as the primary key or encode the bytes to a string?
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Binary Data
Hi there, Am working on an archiving system that stores files/images in a column of type Binary. we want to change the front end of this archiving system it was done using asp.net we dont have access to the source code what is the way to retrieve the files from the binary columns? how they store or retrieve the files? Thanx best site for sql,,,
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