why gv_SelectedIndexChanged not firing

Question

I want to click on QR Code Annd Fire to gv_SelectedIndexChanged event, But Not Firing My Code Below is --Aspx function PrintPanel() { var panel = document.getElementById(" "); var printWindow = window.open('', '', 'height=400,width=800'); printWindow.document.write(' '); printWindow.document.write(' '); printWindow.document.write(panel.innerHTML); printWindow.document.write(' Work Order No     Job Code Tagging --%> --%> --%> >" NextString="Next >" PrevString=" --%> QR Code Print --%> CS Page using QRCoder; using System; using System.Collections.Generic; using System.Configuration; using System.Data; using System.Data.SqlClient; using System.Drawing; using System.IO; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; public partial class Reports_SamplePrepration : System.Web.UI.Page { SqlConnection con; int PageNum = 1; GridView gv = new GridView(); String strConn = ConfigurationManager.ConnectionStrings["ConOrms"].ConnectionString; protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { // ShowData(1); } } protected void grdSamplePrep_RowDataBound(object sender, GridViewRowEventArgs e) { // if (e.Row.RowType == DataControlRowType.DataRow) // { // } } protected void ShowData(int PageNum) { int TotalRecord = 0; // DataTable dt = new DataTable(); int WOID = Convert.ToInt32(ViewState["WoidForBindData"]); DataSet dsSmplPrep = new DataSet(); //WR_TRF.GetTRFReport(BranchID, FromDate, ToDate, Convert.ToInt16(SessionManager.Instance.RoleId),txtTRFno.Text.Trim()); DataTable dtSmplPrep = new DataTable(); try { using (SqlConnection con = new SqlConnection(strConn)) { using (SqlCommand cmd = new SqlCommand("VVS_SAMPLE_PREPARARION", con)) { cmd.CommandType = CommandType.StoredProcedure; cmd.Parameters.Add("@WOID", SqlDbType.Int).Value = WOID; //cmd.Parameters.Add("@PageSize", SqlDbType.Int).Value = 10; cmd.CommandTimeout = 999999; SqlDataAdapter adp = new SqlDataAdapter(cmd); adp.Fill(dtSmplPrep); } } } catch (Exception ex) { } gv.ID = "EmployeeGridView"; gv.AutoGenerateColumns = false; gv.AllowPaging = true; gv.EnableViewState = true; gv.PageSize = 50; // Default page Size //Create EventHanfler for Paging. // gv.RowDataBound += new GridViewRowEventArgs(this.gv_RowDataBound); gv.SelectedIndexChanged += new EventHandler(gv_SelectedIndexChanged); gv.RowDataBound += new GridViewRowEventHandler(gv_RowDataBound); //gv_RowDataBound(null,null); DataTable dt = new DataTable(); DataTable dt1 = new DataTable(); if (dtSmplPrep != null) { if (dtSmplPrep.Rows.Count > 0) { dt = dtSmplPrep; // DataRow dr = null; if (dt != null) { if (dt.Rows.Count > 0) { for (int i = 0; i (IEnumerable list) { var dt = new DataTable(); foreach (var info in typeof(T).GetProperties()) { dt.Columns.Add(new DataColumn(info.Name, info.PropertyType)); } foreach (var t in list) { var row = dt.NewRow(); foreach (var info in typeof(T).GetProperties()) { row[info.Name] = info.GetValue(t, null); } dt.Rows.Add(row); } return dt; } private void BindGridView(GridView gv, DataTable dt) { gv.DataSource = dt; gv.DataBind(); } protected void gvPager_Paging_Click(object sender, CommandEventArgs e) { } #region AutoComplete Work order No [System.Web.Script.Services.ScriptMethod()] [System.Web.Services.WebMethod] public static List SearchWO(string prefixText, int count) { List customers = new List (); string Item = string.Empty; try { using (SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["ConOrms"].ConnectionString)) { using (SqlCommand cmd = new SqlCommand()) { cmd.CommandType = CommandType.StoredProcedure; cmd.CommandText = "GetWoIdBySearchText"; cmd.Parameters.Add("@SearchText", SqlDbType.NVarChar).Value = prefixText; cmd.Connection = con; con.Open(); using (SqlDataReader sdr = cmd.ExecuteReader()) { while (sdr.Read()) { Item = AjaxControlToolkit.AutoCompleteExtender.CreateAutoCompleteItem(sdr["JobOrderNo"].ToString(), sdr["WOID"].ToString()); customers.Add(Item); } } con.Close(); } } } catch (Exception ex) { } return customers; } #endregion protected void txtWorkOrderNo_TextChanged(object sender, EventArgs e) { int Woid = 0; //string WONO= txtTextingWO.Text; //GetEditWorkOrder(GetWorkOrderID(WONO)); if (txtWorkOrderNo.Text != string.Empty) { try { string[] FindValue = txtWorkOrderNo.Text.Trim().Split(';'); if (FindValue.Length > 1) { Woid = Convert.ToInt32(FindValue[1].ToString()); ViewState["WoidForBindData"] = Woid; } txtWorkOrderNo.Text = FindValue[0].ToString(); } catch (Exception ex) { } } } protected void btnInspectionCodeTagging_Click(object sender, EventArgs e) { ShowData(1); } protected void gv_RowDataBound(object sender, GridViewRowEventArgs e) { if (e.Row.RowType == DataControlRowType.DataRow) { int index = e.Row.RowIndex; int indexcell = e.Row.Cells.Count - 1; for (int j = 4; j

Jefferson S. Motta · Answer

Hi, You are triggering the event via code: gv.SelectedIndexChanged += new EventHandler(gv_SelectedIndexChanged); gv.RowDataBound += new GridViewRowEventHandler(gv_RowDataBound); So you need trigger every time the page load and reload, os set this events in .aspx protected void Page_Load(object sender, EventArgs e) { gv.SelectedIndexChanged += new EventHandler(gv_SelectedIndexChanged); gv.RowDataBound += new GridViewRowEventHandler(gv_RowDataBound); if (!IsPostBack) { // ShowData(1); } }