Byte B = (byte)(lstEndPoints); //Error Cannot ConvertJan 24, 2010
0 element "0x01"
1 element "0x82"
byte b = (byte)(lstEndPoints); //Error cannot convert
0 element "0x01"
1 element "0x82"
byte b = (byte)(lstEndPoints); //Error cannot convert
I am develping an application that integrates with an RFID kit. The problem is, the kit comes with an .cs class that accepts data stored in a byte array however, each information stored in the array respresents an int. I wanted to store String information in each array but, my research suggest that a String itself can be converted to a byte array and not a byte....here the code from the .cs class:
byte BlockNo = 0;
byte BlockData = new byte;
byte ReturnCode = 0;
Each t_b*.text respresents an int. Is there a way I can stored a String in a single byte block?
Not sure if this is the correct section to ask this but this is regarding storing datatype problem.im trying to convert an image file retrieve from a folder and convert it to Byte so that i can save into database
In below function i retrieve and convert the image from a folder to byte
Then i set ImageUrl in PageLoad
My image datatype in database is image
I'm trying to convert a X509Certificate2 to byte and I'm using the function Export this way:byte certificateBytes = pfx.Export(X509ContentType.Pkcs12, password);pfx is a X509Certificate2 instance obtained from the certificates in store My of the LocalMachine.I get an error saying that the handle is invalid.the password is correct and instance pfx is not null.View 1 Replies
i need the to convert the byte array in to string. The byte array is a two dimentional array. Is it possible to convert?View 3 Replies
I have an image that I capture from an ip camera and post it on a webpage to an image tag. Now I would like to convert to access the picture so that I can save it to our cache blob. Here is my code:
<asp:Image ID="imgPhoto" runat="server" ImageAlign="Middle" />
code behind image assignment:
imgPhoto.ImageUrl = "http://10.10.40.35/axis-cgi/jpg/image.cgi?resolution=640x480";
In my aspx page I have a HTML inputfile type which allows user to browse for a spreadsheet.Once the user choses the file to upload I want to read the content of the spreadsheet and store the content into mysql database table. I am using the following code to read the content of the uploaded file and convert it into a datatable in order into insert it into database table.
if (filMyFile.PostedFile != null)
// Get a reference to PostedFile object
HttpPostedFile myFile = filMyFile.PostedFile;
// Get size of uploaded file
int nFileLen = myFile.ContentLength;
// make sure the size of the file is > 0
if (nFileLen > 0)
// Allocate a buffer for reading of the file
byte myData = new byte[nFileLen];
// Read uploaded file from the Stream
myFile.InputStream.Read(myData, 0, nFileLen);...................................
How can I convert DataSet to byte arrayView 2 Replies
I have datatable with records and i have existng Excel file in my application temp folder i want to export datatable records in this excel file workbook and i want to convert this excel workbook into byte array and i want to send this byte array in reponse.write to user to give download excel file optionView 6 Replies
I have a richtextbox and i wrote it this text and add pictures like below.[img] symbolize images.
asdasdasd als dksalsdksals kdsal skdsalsdlasdkalsskdsa
if we get those images hexadecimal rtf codes we have "0ef1caf...........0d" billions characters like this.I what to convert this hexadecimal explanation to byte array to save images one by one to where i want.
i got an image display in my system, note that it is not an uploaded file, it is display in <asp:Image> form
My question is, how do i use that image and convert it to a byte data so that i can save into database?
Error 1 Cannot implicitly convert type 'string' to 'byte'
OleDbCommand cmd = new OleDbCommand("select r1,r2,r3,r4 from ope", Con);
OleDbDataReader dr = cmd.ExecuteReader();
y = dr;
y = dr;
Every morning we send out an email with a text file attached. This is a manual process so I am automating it.I am using an internal mail web service. Its last two parameters are a byte array which is the file contents and a string which is the file name. I passed (...gbytes, "test.txt") and the only thing wrong with it is text.txt is XML. I want it to be text (csv is fine because there is actually four columns that come from a datatable).So I am assuming what's making it XML is this code:
System.IO.MemoryStream stream = new System.IO.MemoryStream();
System.Runtime.Serialization.IFormatter formatter = new System.Runtime.Serialization.Formatters.Binary.BinaryFormatter();
gbytes = stream.GetBuffer();
I am trying to search the Internet for how to convert a datatable to a byte array, but I can't find how to have it be text instead of XML. Also, another parameter our WS takes is a flag to say if it's XML, and I am setting this to false.
I have datalist bind with sql datasourceI have update command
Protected Sub DataList1_UpdateCommand(ByVal source As Object, ByVal e As System.Web.UI.WebControls.DataListCommandEventArgs)
Dim ID As String = DataList1.DataKeys(e.Item.ItemIndex).ToString()
Dim title As TextBox = CType(e.Item.FindControl("textCategoryName"), TextBox)
Dim image As FileUpload = CType(e.Item.FindControl("FileUpload1"), FileUpload)
It shows the error in the line
SqlDataSource1.UpdateParameters("image").DefaultValue = image.FileBytes
Value of byte can not be connverted to string
I also change the sql datasource parameters for image from object to byte
<asp:Parameter Name="title" Type="String" />
<asp:Parameter Name="image" Type="byte" />
<asp:Parameter Name="ID" Type="Int32" />
I got a variable of type System.Drawing.Image and need to convert it to a variable of type byte so I can store the image in the database. Can someone show me how to do that in VB.NET code.View 2 Replies
I have a datatype defined as 'Object', using this variable I am passingView 2 Replies
I have a working application to save an image file to my sql database (Saves as "Original_Image" in the DB TBL_ImageGallery). I have a file limit on the upload of 1 MB. This also works great and the image is being saved beautifully. I found a bit of an issue. Being i am working on a network with 2 bonded T1 connections the streaming of images to my site, when tested internally, is effortless. I am not sure that this will be the same with a generic bandwidth. I want to store the original image size into the databse (already done) but also store a smaller sized (in bytes not actual size [Width, Height]) to my database in a "ThumbNail" column. This will allow the browser to only have to pass the "Thumbnail" sized image, obviously this needs to be much smaller than the original (ex: 1MB orignal I want to save as 12KB image in the thumbnail column), to the thumbnail img control in the user's interface.
I am not sure if this is possible or if there is a need of third party controls. I am interested in doing this as either a stored procedure or in the C# code on an event fire. There may be a better / other solution to this and if that is the case I am also interested
My fu.PostedFile shows data in it. Each index of the array has different value in it. But arrFileByte shows all the index have 0 as their value. I've used this very code to upload files in the database before. What might be the resaon it is not working now.
How can I get asp.net to two-way databind (via Bind("myfieldname")) to a Byte value? I'm storing boolean values in Sql Server to a Byte type and it seems to be looking for boolean. Apparently I need something to convert my datasource's Byte
Looked into creating a method to call like MyConvertMethod(Bind("myfieldname")) but asp.net 4.0 did not allow that with "Bind()" though it allowed it with "Eval()" but Eval only seems to do one way databinding. I looked into the ConvertHandler but seems to be winforms and not webforms.
I want to send an email that has a machine readable part you cut and paste into an asp.net page and you get the information. I have stored all the information in an object and then used an XMLSerizer to create some xml. It all worked fine until I added some Images as byte to the object. If I dump the resulting string to disk then I can recreate the object fine but after it appears in the email client and I try to cut and paste it it never works. Clearly there are non standard characters coming out that email clients don't like.
Is there some encoding I could apply to my XML that would make it display correctly in an email client? Then I could cut, paste, decode and deserilize to get my object back.
I want to store some byte to ViewState. For example I want to store a list of FileBytes. How can I do it?View 1 Replies
how to encrypt a PIN in to 4 byte binary. The MD5 and other hashes I have known give the result as 8 or 16 byte. I need only 4 bytes because it is alloted only varchar(4) in the database.View 3 Replies
I need to take a byte array and save as pdf. How can I do that?View 4 Replies
I am trying to upload a file to the database using the File Upload control. The database column is of type "text"
In the Insert command, I tried to retrieve the file and pass, but as it is a byte array, I am not able to save the data.
How to convert the byte array to string?
I have a byte array of an image on the server side.
I have an img tag on my View page.
I'm wondering how to be able to use the byte array as the image source of the img tag.
I'm retrieving the byte array in my model, passing it back to my controller method and then I'd like to store it in ViewData somehow.
Then in the $(document).ready jQuery function of the View page somehow set that byte array as the source for my IMG tag.
Is this possible?