string filter1 = string.Format("ACCentrala = \"{0}\"", centrala.Text);
string filter2 = string.Format("ACTelefon = \"{0}\"", lokal.Text);
string filter3 = string.Format("ACPloca = \"{0}\"", ploca.Text);
string filter = "";
if (ch1.Checked)
{
filter = filter1;
}
if (ch2.Checked)
{
if (!string.IsNullOrEmpty(filter))
{
filter += " AND ";
}
filter += filter2;
}
if (ch3.Checked)
{
if (!string.IsNullOrEmpty(filter))
{
filter += " AND ";
}
filter += filter3;
}
this.istorijaBS.Filter = filter;