private void Button1_Click(object sender, System.EventArgs e)
{
// Catalog Name
string strCatalog = "TestCatalog";
string strQuery="";
strQuery = "Select DocTitle,Filename,Size,PATH,URL from Scope() where FREETEXT('" +TextBox1.Text+ "')";
// TextBox1.Text is the word that you type in the text box to query by using Indexing Service.
string connstring = "Provider=MSIDXS.1;Integrated Security .='';Data Source="+strCatalog;
System.Data.OleDb.OleDbConnection conn = new System.Data.OleDb.OleDbConnection(connstring);
conn.Open();
System.Data.OleDb.OleDbDataAdapter cmd = new System.Data.OleDb.OleDbDataAdapter(strQuery, conn);
System.Data.DataSet testDataSet = new System.Data.DataSet();
cmd.Fill(testDataSet, "SearchResults");
DataView source = new DataView(testDataSet.Tables[0]);
DataGrid1.DataSource = source;
DataGrid1.DataBind();
}