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我想使用搜索按鈕檢索存儲在SQL Server中的圖像(二進制文件)。無效的表達式字節'字節'(C#代碼)
private void *button_*Click(object sender, *Event* e)
{
SqlConnection con = new SqlConnection(Connect.Connec);
SqlCommand command = new SqlCommand();
SqlDataReader reader;
try
{
if (reader.HasRows)
{
while (reader.Read())
{
picStaffImage.Image = (Image)reader["Image"]; //Get the image
ImageConvert.ByteArrayToImage(byte[1] (byteArrayIn)); //Goes to the ImageConvert to retrieve image in byte
picStaffImage.Image = (Image)reader[ImageConvert.ByteArrayToImage(byte[1](byteArrayIn))];
cmbStationOptn.Text = (string)reader["StationOfOperation"];
}
}
reader.Close();
command.Dispose();
}
}
類如下:
using System.Drawing.Imaging;
namespace Dexter
{
class ImageConvert
{
public static Image ByteArrayToImage(byte[] byteArrayIn)
{
using (MemoryStream stream = new MemoryStream(byteArrayIn))
{
return Image.FromStream(stream);
}
}
}
}
什麼代碼試圖做的是,它是檢索存儲在二進制中的SQL Server數據庫中的圖像。它從二進制轉換回圖像,將其放置在名爲picStaffImage的圖片框中。
這裏我如何保存圖像。
else
{
Image img = picStaffImage.Image;
byte[] arr;
ImageConverter converter = new ImageConverter();
arr = (byte[])converter.ConvertTo(img, typeof(byte[]));
string pass = " INSERT INTO *table* " + "(Image,Operation)" +
"VALUES ('" + txtFullName.Text + "', " +
" '"+ arr +"', " +
" '" + cmbStationOptn.Text + "') ";
command = new SqlCommand(pass,con);
任何幫助將不勝感激。
哪裏byteArrayIn在點擊處理程序來自和它如何定義的? – Ralf
[如何將Sql Server數據庫中的二進制數據轉換回image.used Memory Stream。它保存,現在試圖從Sql Server中檢索](http://stackoverflow.com/questions/30649043/how-to-convert-bin-data-in-sql-server-database-back-to-image-used-內存STRE) –