DataSource Controls :: Database Image Read With Null Value?
Feb 21, 2010here 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
[Code]....
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DataSource Controls :: Read Data Of From A Sql Database?
Feb 24, 2010i am trying to read data of from a sql database
the code that im using is as follows:
[Code]....
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
DataSource Controls :: Parse A Null Database Value?
May 18, 2010I 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
yValues.Add(Double.Parse(.GetValue(0)))........
DataSource Controls :: Read And Insert Data Into Database?
Mar 5, 2010I 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.
DataSource Controls :: NULL Value Returned From Database And Handling It
Feb 14, 2010I'm developing a website using asp.net 2.0 . I have retrieved a record from database through the query.
SqlConnection con = new SqlConnection(connectionstring);
con.Open();
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.
DataSource Controls :: How To Read Flat Files(.txt,.doc) / How To Store Them Into Database
Mar 19, 2010my problem is my asp.net and C#.net 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..
BNK20100312APPRU5104220
BNK20100312APPRU5761800
BNK20100312APPZU3739288
BNK20100312APPZU4454037
BNK20100312APESU2552894
BNK20100312APAXU4302543
BNK20100312APCKU1613369
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Mar 19, 2011i 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?
DataSource Controls :: How To Read Data And Perform Action From The Database
May 3, 2010i'm quite new to asp.net 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...
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DataSource Controls :: Checking From Null Values Comming From The Database?
Feb 11, 2010Is there a cleaner way to check for a null value comming from the database?
Right now i am doing this
[Code]....
There has to be a better what than doing this on every row which could possibly be null
DataSource Controls :: Failed To Update Database "C:MEMBERSHIP.MDF" Because The Database Is Read-only
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Web Forms :: Read And Insert Image Into A Database
Feb 10, 2010i am newbie to asp.net.i 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 database.how can i achieve this functionality?
i am new to asp.net development.
Web Forms :: Read Image From Database In Imagebox?
Jul 1, 2010i design a webpage in asp.net(C#) 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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View 3 RepliesWeb Forms :: Read Image Bytes From Database And Display?
Jan 18, 2011I 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?
[Code]....
Web Forms :: Read Image From Database In Imagebox Control?
Jul 1, 2010i design a webpage in asp.net(C#) 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!
View 3 RepliesDataSource Controls :: Putting A Image In A Database?
Mar 26, 2010I 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?
DataSource Controls :: Store An Image In A Database?
Feb 4, 2010I 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 ?
DataSource Controls :: Get Id Of Last Image Inserted Into Sql Database Table?
Jul 3, 2010I 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()
[Code]....
Web Forms :: Doesn't Select Image In Website In Database Null Value Go
Jun 9, 2010if 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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Dec 6, 2010I 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.
DataSource Controls :: Read Data From An Access Data File And Input Into The SQL Database?
Mar 10, 2010I 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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View 1 RepliesRead Binary Column In Database Into Image On Asp Page - Code Doesn't Work?
Mar 11, 2010I 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);
g.Dispose();
image.Dispose();
}
con.Close();
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?
