private void loadServerInstance()
{
if (isChackInstance)
{
btnTest.Enabled = false;
pnlMain.Enabled = false;
this.Cursor = Cursors.AppStarting;
var instance = SQLServerHelper.EnumerateServers();
if (instance != null)
{
cbxServerName.Items.Clear();
cbxServerName.Items.AddRange(instance.ToArray());
isChackInstance = false;
}
btnTest.Enabled = true;
pnlMain.Enabled = true;
Cursor = Cursors.Default;
}
}