[英]C# WPF image from database to DataGrind
因此,我有一個將數據從數據庫導入到我的應用程序的類:
class refresh : MainWindow
{
public refresh(string tableName)
{
connection MyConnection = new connection();
string sqlCommand = "SELECT * FROM " + tableName + "";
DataTable dt_Silo = new DataTable();
MySqlDataAdapter com_Silo = new MySqlDataAdapter(sqlCommand, MyConnection.con);
com_Silo.Fill(dt_Silo);
dataGrid.ItemsSource = dt_Silo.DefaultView;
}
}
我以此添加數據和圖像:
private void buttonProductAdd_Click(object sender, RoutedEventArgs e)
{
try
{
byte[] imageBt = null;
string uriPath = imageProduct.Source.ToString();
string localPath = new Uri(uriPath).LocalPath;
FileStream fstream = new FileStream(localPath, FileMode.Open, FileAccess.Read);
BinaryReader br = new BinaryReader(fstream);
imageBt = br.ReadBytes((int)fstream.Length);
MySqlCommand com_ProductAdd = MyConnection.con.CreateCommand();
com_ProductAdd.CommandText = "INSERT INTO product (NAME, AMOUNT, PICTURE) VALUES('" + textBoxProductAddName.Text + "', '" + textBoxProductAddAmount.Text + "', @IMG)";
MyConnection.con.Open();
com_ProductAdd.Parameters.Add(new MySqlParameter("@IMG", imageBt));
com_ProductAdd.ExecuteNonQuery();
MyConnection.con.Close();
MessageBox.Show("Dodano produkt!");
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
最后,我將數據加載到我的dataGrind中:
private void Window_Loaded(object sender, RoutedEventArgs e)
{
refresh RefreshProdukty = new refresh("product");
dataGrid.ItemsSource = RefreshProdukty.dataGrid.ItemsSource;
}
如何顯示圖像而不是“ [] Byte Array”?
您可以使用以下方法獲取BitmapImage
:
private BitmapImage BytesToBitmapImage(byte[] bitmapBytes)
{
using (var ms = new MemoryStream(bitmapBytes))
{
var bitmapimage = new BitmapImage();
bitmapimage.BeginInit();
bitmapimage.StreamSource = ms;
bitmapimage.CacheOption = BitmapCacheOption.OnLoad;
bitmapimage.EndInit();
return bitmapimage;
}
}
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