marksnanax.blogg.se

1. VISUAL STUDIO WINFORMS CREATE TEXT BOX FROM DATABASE HOW TO
2. VISUAL STUDIO WINFORMS CREATE TEXT BOX FROM DATABASE CODE

And yes, I did use a breakpoint and not matter what, the byte variable is always null when reading from the SqlDataReader. The saving part works but the retrieval doesn't. I even confirmed that real bytes were stored by retrieving the data using InfoPath it returned a long string of numbers in a textbox. Hence when I select the inserted record the value is

VISUAL STUDIO WINFORMS CREATE TEXT BOX FROM DATABASE HOW TO

I learned this by watching the following tutorial which includes how to save and retrieve an image:įYI, the image column in the database table is of image type. In Visual Studio, open your code-based section report. String strCmd = "INSERT INTO (,) VALUES('" + txt_id.Text + "', sqlCmd = new SqlCommand(strCmd, sqlCon) Breaking Change V11: Columns visibility set to false but shows when the width is set in WinForms. byte img = null įileStream fs = new FileStream(imgLoc, FileMode.Open, FileAccess.Read)

VISUAL STUDIO WINFORMS CREATE TEXT BOX FROM DATABASE CODE

I convert the image to bytes and write it to the database by using the below code block int a try and catch clause. # Retrieve Images from sql server database Third, how did you read image from database? Here is a similar thread which shows how to read image from SQL server. #Save and retrieve image (binary) from SQL Server using Entity Framework 6 Second, how did you convert the image to byte? Here is a similar thread which shows how to convert image. How can I read the image in order to display it in a picture box?įirst of all, I suggest you put a breakpoint at the line “byte img = (byte)rdr ” to check whether it is empty. > The img is always null and I'm unable to convert the object at the specified column index to byte array. Thanks for helping make community forums a great place. We are trying to better understand customer views on social support experience, so your participation in this interview project would be greatly appreciated if you have time.

PictureBox1.Image = Image.FromStream(ms) SqlCommand command1 = new SqlCommand("select Name from where id=9", connection) īyte img = (byte)command1.ExecuteScalar() SqlConnection connection = new SqlConnection() Private void OpenImage_Click(object sender, EventArgs e) SqlCommand sqlCmd = new SqlCommand(strCmd, sqlCon) And use the code below to show the image in PictureBox. Inspired by Microsoft Windows, the File Explorer View is a unique way to display data within the Data Grid container. insert into tableName (ImageColumn) SELECT BulkColumn FROM Openrowset( Bulk, SingleBlob) as img. I insert a image to database using T-SQL. String strCmd = "INSERT INTO (,) VALUES(9, sqlCon = new SqlConnection() I make a simple example for your reference. String imgLoc = fs = new FileStream(imgLoc, FileMode.Open, FileAccess.Read) I made a simple demo as below: private void SaveImage_Click(object sender, EventArgs e) Second, I suggest you check the columns in the rdr whether the image is stored in the rdr. I could not test your project, so I suggest you check the connection whether you open the table which you saved. First, I did not see you set the value of the imgLoc.