5
Answers

How to get dropdownlist value with out using post back

narasiman rao

narasiman rao

7y
242
1
  i have two dropdownlist as follows

Country       dropdownlist1
State           dropdownlist2

when i click the country dropdownlsit1, in state dropdownlist2 corresponding state will display.

for that how to do with out using autopostback
 
 
Answers (5)
2
Fadugba Jeremiah

Fadugba Jeremiah

NA 74 7.5k 11y
use RDLC it worked for me
Accepted
0
Surendrasinh Rathod

Surendrasinh Rathod

NA 75 20.3k 11y
Thanks FADUGBA JEREMIAH,I have crete RDLC runtime and save the xml code of dynamically generated rdlc in DetailReport.rdlc .Now my problem is on top of winform i have keep one ComboBox,from which i can select which data i have to display in report.For first selected item it display report,then after it doesn't show report.

My code is as follow:
 private void btnShow_Click(object sender, EventArgs e)
        {
            ReportViewer1.Reset();
            ReportViewer1.LocalReport.DataSources.Clear();

            string dsName = comboBox1.Text;
            #region SQL
            DataTable dt = new DataTable();
            SqlConnection con = new SqlConnection("Data Source=SERVER;Initial Catalog=Test;User ID=sa;Password=sa");
            SqlCommand cmd = new SqlCommand("SELECT * FROM dbo." + dsName, con);
            SqlDataAdapter da = new SqlDataAdapter(cmd);
            da.Fill(dt);
            #endregion
            ReportGenerator gen = new ReportGenerator(dt, dsName);
            ds = new ReportDataSource(dsName, dt);
            string xml = gen.GeneraReport();

            XmlDocument xDoc = new XmlDocument();
            xDoc.LoadXml(xml);
            
            xDoc.Save(@"D:\\Surendra\\SSRS\\SSRS\\DetailReport.rdlc");
            
           
            ReportViewer1.LocalReport.ReportEmbeddedResource = "SSRS.MainReport.rdlc";
            ReportViewer1.LocalReport.DisplayName = "Main Report";
           
            ReportViewer1.LocalReport.SubreportProcessing += new SubreportProcessingEventHandler(LocalReport_SubreportProcessing);
            this.ReportViewer1.RefreshReport();

        }

        void LocalReport_SubreportProcessing(object sender, SubreportProcessingEventArgs e)
        {
            if (e.ReportPath == "DetailReport")
                e.DataSources.Add(ds);
        }