Is there a way to assign a byte[] as Image to a ImageButton?Currently i'm using the Aspx:BinaryImage which allows me to assign a byte[] as Image.Problem is that the BinaryImage does not support a onClick event.
View 1 RepliesI 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[16];
byte ReturnCode = 0;
[code]....
Each t_b*.text respresents an int. Is there a way I can stored a String in a single byte block?
ArrayList lstEndPoints
0 element "0x01"
1 element "0x82"
byte b = (byte)(lstEndPoints[0]); //Error cannot convert
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
[Code]....
Then i set ImageUrl in PageLoad
[Code]....
My image datatype in database is image
I need to take a byte array and save as pdf. How can I do that?
View 4 RepliesI am using web services to retrieve one record from database. here in this record there is one image field.In web service, the record is converted to xml document and sent to client
when i send this record to client thru webservice , this photo is converted as byte[].
to check before giving to client, i checked my webservice. for that i took a new .aspx page and i retreived my record in to dataset and binded that to gridview. In gridview, I could see my image in byte[] format
I want to change this byte[] to previous image format in my asp.net page.
I am unable to change. I searched in google, I am unable to solve my problem.
Currently, I am using Itextsharp PDFStamper to Fill my PDF template. But my problem is, How do I return the completed File in Byte[] so I can open it using Response.BinaryWrite(Byte[]); in outputting the PDF file
View 5 RepliesHow can I convert DataSet to byte array
View 2 RepliesI a method that generates a PDF and the method returns a byte value, but after response.end statement, the shows an error that the "File does not begin with '%PDF-' here is the code:
[Code]....
[Code]....
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?
I want to show on a label the total mega byte size of all files in a specific folder. Does the I0 class let us do this?
View 5 RepliesI am trying to pull string values from LDAP. They are all text attributes in LDAP. I'm able to pull all values successfully from LDAP except one attribute below. following line of code displays System.Byte[] instead of actual string value. Why is it showing System.Byte[] and how can I fix it?
txtAccount.Text = loResultPropertyCollection[
"Account"][0].ToString().ToLower();
I am developing a dynamic site that utilizes webparts, it uses jquery's sortable to perform the drag and drop functionality. Now I am attempting to write a callback that saves the page state when the user drags and drops a webpart from a zone to another. As you can see from the code below, I am attempting to manually call a function which updates the database of the page state.
However I dont know how to get the datablob for the current page, how can I get this object for saving?Is retrieval of the datablob possible via a callback?Is there another/better way to acomplish this? //In my custom class 'CustomWebPartManager' I have the following code
protected override void OnPreRender(EventArgs e)
{
string cbReference = Page.ClientScript.GetCallbackEventReference(this, "arg", "GetDateFromServer", "context");[code]....
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)
[Code] ....
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
<UpdateParameters>
<asp:Parameter Name="title" Type="String" />
<asp:Parameter Name="image" Type="byte" />
<asp:Parameter Name="ID" Type="Int32" />
</UpdateParameters>
Error 1 Cannot implicitly convert type 'string' to 'byte'
OleDbCommand cmd = new OleDbCommand("select r1,r2,r3,r4 from ope", Con);
Con.Open();
OleDbDataReader dr = cmd.ExecuteReader();
if (dr.Read())
{
y[0] = dr[0];
y[1] = dr[1];
[Code] .....
i am not getting the output. I can able to display the image using generic handler.What i need is to display without using generic handler.
View 1 RepliesI have a FormView with a byte field. The field is not required and if I don't enter a value, I get an error that the value is not acceptable in a byte field. I can replace the null value with 0 but I would prefer not to.
What is the best way to handle this so that if I do not enter a value in a byte (or int16) field to insert a null value (or whatever they do in the ASP.net).
I am trying to get the following code behind to store a file in a datbase using Linq (with *dbml). I am getting an intellisense error in my "For each" loop the says the following":Value of 'Byte' cannot be converted to 'System.Data.Linq.Binary'I have been searching for awhile, but I can't seem to find a solution that has worked for me yet.
[Code]....
if (Session["image"] != null)
{
ImageButton1.ImageUrl = "~/IMAGE/pic.jpg?" + DateTime.Now.Ticks.ToString();
}
The session key image is from another aspx page
{
string strPhoto = Request.Form["imageData"]; //Get the image from flash file
byte[] photo = Convert.FromBase64String(strPhoto);
FileStream fs = new FileStream(Server.MapPath("~/IMAGE/pic.jpg"), FileMode.OpenOrCreate,
[Code]....
The issue is
Operand type clash: nvarchar is incompatible with image.
Need to display download link with file size as(369KB, 1MB) for file's saved in database for images,pdf, doc, docx, xlsx.
How to calculate file size for any format of file saved in database..?
I have an ImageButton with an image put to it.
I wonder if it is possible to put opacity for example 50% to this ImageButton in any way?
[Code]....
I have the following image button:
<asp:ImageButton ID="submit" EnableViewState="true"
ImageUrl="/images/btn_submit.png" AlternateText="Submit" CssClass="f-right"
runat="server" onclick="submit_Click"></asp:ImageButton>
The event is fired in Firefox but not in IE*.
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 RepliesI have a datatype defined as 'Object', using this variable I am passing
View 2 RepliesI created an image button called "pic1" with the OnClick feature. When clicked it runs "btnClicked". In the sub "btnClick", how would I get information? One example is to get the button tooltip. I tried this: request.form.item("pic1.tooltip"). That did not work.
View 9 Replies