DataSource Controls :: Database Image Read With Null Value?

Feb 21, 2010

here is my code which is working fine to read batabase image from database but if there is NULL value in database so how can i read physical path noimage.jpg


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DataSource Controls :: Read Data Of From A Sql Database?

Feb 24, 2010

i am trying to read data of from a sql database

the code that im using is as follows:


as you can see, im using table adapters - though when i run the page, it throughs me the following error, which i'm finding hard to understand

for my last project, i had to use the exact code, but at the time, i was using an access DB and now i'm uning sql D|B

the only difference from last time is that instead of using :

using System.Data.OleDb;

Now im using: using System.Data.SqlClient; //sql server

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DataSource Controls :: Parse A Null Database Value?

May 18, 2010

I have a datareader like so but when it encounters a NULL database value, I get the error message "Conversion from type 'DBNull' to type 'String' is not valid."

Dim myReader As SqlDataReader = myCommand.ExecuteReader()
Dim yValues As New List(Of Double)
With myReader
If .HasRows Then
While .Read

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DataSource Controls :: Read And Insert Data Into Database?

Mar 5, 2010

I m uploading a text file. I want to read that text file line by line and I want to save that data into database if there are no errors in that text file. I have 5 different columns in database and I want to take those 5 columns data in the text file and insert into respective columns.

For this, which is the best way to do. Can we read and insert data into respective fields in no time.

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DataSource Controls :: NULL Value Returned From Database And Handling It

Feb 14, 2010

I'm developing a website using 2.0 . I have retrieved a record from database through the query.

SqlConnection con = new SqlConnection(connectionstring);
String SQL = "SELECT * FROM Table where attribute1 = value";
SqlCommand cmd = new SqlCommand(SQL, con);
SqlDataReader reader = cmd.ExecuteReader();

Sometimes, there is no record matching this query and so null value is retrieved. My question is how to find that the null value is returned. Since If (no record found i.e NULL) certain actions needs to be done and if (records found i.e NOT NULL) ceratin different actions needs to be carried out.

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DataSource Controls :: How To Read Flat Files(.txt,.doc) / How To Store Them Into Database

Mar 19, 2010

my problem is my and application should read flat files(.txt,.doc) from folder automatically and read the data from file and stored into database

my file like this :

BNK20100312APPHU6658994 // BNK,20100312(date),Ap,PHU6658994 So we have to store these..

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DataSource Controls :: Read Binary File From Sqlserver2005 Database?

Mar 19, 2011

i have a table fileupload with id,username,filename,filedata,uploaddate here i have uploaded successfully...but i cannot retrieve the binary file uploaded by using its id. can anybody tell me how to read binary file from database using c#.net3.5?

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DataSource Controls :: How To Read Data And Perform Action From The Database

May 3, 2010

i'm quite new to and have been working on a simple way for users to send messages to each other....

the messages work fine, users can send and reply, however, i want a way to tell the users when they have a message and how many...

how to do this in simple terms and supply vb code if possible.

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DataSource Controls :: Checking From Null Values Comming From The Database?

Feb 11, 2010

Is there a cleaner way to check for a null value comming from the database?

Right now i am doing this


There has to be a better what than doing this on every row which could possibly be null

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DataSource Controls :: Failed To Update Database "C:MEMBERSHIP.MDF" Because The Database Is Read-only

Feb 8, 2010

This is a very common error as evidenced but the very large number of problems and suggested solutions on the web. I finally got around it last week but can't remember what was the step that did it. At that time, I was building a web application rather than a web site. Is that the difference? As you can see, it is no longer in the APP_DATA folder and is named membership.mdf rather than aspnetdb.mdf. I ran aspnet_regsql.exe to create it and actually had it working and was updating it successfully. But for other reasons, I had to scrap the application and decided to re-create it from scratch as a web site rather than a web application. I had been using Visual Studio 2008 to build the web application but am now using Visual Web Developer 2008 Express Edition to build the web site. Unfortunately, the Visual Studio application will no longer open so I can't verify that the web application still works. Can anybody help? (Please!!!) BTW, ASPNET and NETWORK SERVICE both have full control over the membership.mdf.

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Access :: Read And Write Image To Database?

Aug 2, 2010

i need vb code how to read and write an image to access data base

how to read it from dataTable object and store it in my application as image object

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Web Forms :: Read And Insert Image Into A Database

Feb 10, 2010

i am newbie to am trying to make sign up kind of webform where user can submit his image. i have used fileupload control to take image from user.i want to insert that image into a can i achieve this functionality?

i am new to development.

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Web Forms :: Read Image From Database In Imagebox?

Jul 1, 2010

i design a webpage in and in webpage user can upload an image in database i can read image from database but i can't load image in imagebox control!!!

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JQuery :: Read Image In Lightbox From Database?

Feb 6, 2011

i want to use jquery lightbox but i want to read image from database.i save image path in database and i want to read them.every lightbox that i find use from static image.

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Web Forms :: Read Image Bytes From Database And Display?

Jan 18, 2011

I have a database which signature images. Images are saved in binary.

I want to retrieve the image and display in an image control. I am kinda new to ASP and what seemed so simple has suddenly become a real problem.

The at the botom is how I would do it on a winform. Unfortunately I have no picturebox control in .asp. So how do I get the image stream into image1.imageurl?

Is there a way to put the stream into a session variable and then point to that as a url?

for instance replacing the last line below with this and then pointo to it from image1.imageurl?


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Web Forms :: Read Image From Database In Imagebox Control?

Jul 1, 2010

i design a webpage in and in webpage user can upload an image in database i can read image from database but i can't load image in imagebox control!

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DataSource Controls :: Putting A Image In A Database?

Mar 26, 2010

I have created a SQL DB in Visual Web Developer Express Edition and i am using a aspx form with connection strings and grid views to call the information but the problem i have is that i wish to insert an image into the database and i have tried numorus ways and i can't seem to even put the image in the DB let alone call it in the grid view.

i'm not sure what datatype to select and i'm not sure what i'm supposed to write in the data field to call the image, can i use a image saved on my computer or have i got to use a image that is already posted on the internet some where?

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DataSource Controls :: Store An Image In A Database?

Feb 4, 2010

I have a table which contain products, I want each record in the table to have an image. I've created the field with the datatype image. How to I manually add image to the table ?

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DataSource Controls :: Get Id Of Last Image Inserted Into Sql Database Table?

Jul 3, 2010

I have this image upload code...that works....but I need a code to get the Id of the image that i just uploaded..

Protected Sub ImageButton_AddImage_Click(ByVal sender As Object, ByVal e As System.Web.UI.ImageClickEventArgs) Handles ImageButton_AddImage.Click
Dim IntLength As Integer
Dim ArrContent As Byte()


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Web Forms :: Doesn't Select Image In Website In Database Null Value Go

Jun 9, 2010

if a person does not select image in website in database null value go. when we retrieve data for that person i want if image is null then i want to show blank face image. for storing and retrieve image im using handler.ashx but not able to do the part that i have explained .

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DataSource Controls :: How To Insert And Delete Image In To Sql Server Database

Mar 1, 2010

How to write a Sql Query for insert, Delete for Image from sql server 2005.

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Forms Data Controls :: Displaying A Null Or Empty Cell For A Null Datetime Database Value In Gridview?

Dec 6, 2010

I have setup my business object to have a create_date and edit_date members both datetime datatypes. My company want to display the create_date and edit_date fields in a gridview for each transaction. The problem i have is that after insterting a record it will have a valid create_date but no edit_date and when displayed in the gridview it defaults to datetime.minvalue (My default). How on earth do i show an empty field in my gridview for a null datetime field in the database?

I am using similar architecture to the Imar Spaanjaars example of a tiered solution. With a few small tweeks it has worked well for me for ages. I am passing a List<Database> to my object datasource which connects to my gridview.

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DataSource Controls :: Read Data From An Access Data File And Input Into The SQL Database?

Mar 10, 2010

I have a lot of members data to enter into the ASPNETDB database. How can I read this data from an Access data file and input into the SQL database. All data is for user Names and Password,

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Data Controls :: How To Read Bytes From Image Column Field And Display As Image

May 7, 2015

My query is that I have an sql field for image with db type "Image" , now I have successfully inserted some images in the form of bytes, now how to read those bytes of image from database and convert, show in gridview?

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Read Binary Column In Database Into Image On Asp Page - Code Doesn't Work?

Mar 11, 2010

I want to read from database where I've stored a image in binary field and display a image.

while (reader.Read())
byte[] imgarr = (byte[])reader["file"];
Stream s = new MemoryStream(imgarr);
System.Drawing.Image image = System.Drawing.Image.FromStream(s);
Graphics g = Graphics.FromImage(image);
g.DrawImage(image, new Point(400, 10));
image.Save(Response.OutputStream, ImageFormat.Jpeg);

This piece of code doesn't work:

System.Drawing.Image image = System.Drawing.Image.FromStream(s);

I tried the code from this article. And I got the same mistake " the parameter is not valid ". Maybe I'm not aware of something, some setting in sql server or webconfig or sth else. Anyone else who has experience from fetching images from database? The parameter is not valid is the error message. db table contains data. What am I doing wrong?

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