private void CheckMdiChildren(Form form)
{
foreach (Form frm in this.MdiChildren)
{
if (frm.GetType() == form.GetType())
{
frm.Focus();
return;
}
}
form.MdiParent = this;
form.Show();
}
Form1 yeniform = new Form1 ();
CheckMdiChildren(yeniform );
try
{
//işlemler
}
catch (Exception ex)
{
EventLog log = new EventLog();
log.Source = "Application";
log.WriteEntry(ex.Message, EventLogEntryType.Error, 200);
}
byte[] resim = (byte[])dt.Rows[0]["Resim"];
MemoryStream stream = new MemoryStream(resim);
pictureEdit1.Image = System.Drawing.Image.FromStream(stream);
public class InternetCS
{
[DllImport("wininet.dll")]
private extern static bool InternetGetConnectedState(out int Description, int ReservedValue);
public static bool IsConnectedToInternet()
{
int Desc;
return InternetGetConnectedState(out Desc, 0);
}
}
private void button1_Click(object sender, EventArgs e)
{
if InternetCS.IsConnectedToInternet() == true
{
MessageBox.Show("bağlantı var");
}
}