Can't retrieve data entered in first empty row of grid view - asp.net

Question

I have placed grid view in update panel with first row as empty and it is not bound with any data base. Rather I have bound grid view with data table. Whenever I click on 'Add New Row' button, a new row is created in grid view there by retaining the data field in old rows but my problem is whenever I click on save button, at that time data of first row is not retried but I can get the data that is filled in second row and onwards. I have saved my data table in session and again retrieving it after each post back.
Here is the code of my .aspx.cs page
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Data.SqlClient;
using AppResumeMaster;
using System.Collections;
using AppQualificationDetail;
public partial class Applicant_ApplicationForm : System.Web.UI.Page
{
int Rows = 1;
object MaxAppId = 0;
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
setInitialRow();
}
}
protected void saveBtn_Click(object sender, EventArgs e)
{
try
{
using (DataOperation oDo = new DataOperation())
{
MaxAppId= oDo.ExecuteScaler("select max(AppId) from tblAppResumeMaster");
if (MaxAppId == System.DBNull.Value)
MaxAppId = 0;
}
using (AppResumeMasterClass objAppResumeMasterClass = new AppResumeMasterClass())
{
objAppResumeMasterClass.AppId = Convert.ToInt32(MaxAppId)+1;
objAppResumeMasterClass.AppFirstName = firstnameBox.Text;
objAppResumeMasterClass.AppLastName = lastnameBox.Text;
objAppResumeMasterClass.AppAddress1 = CurAddBox.Text;
objAppResumeMasterClass.AppCity1 = CurAddBox.Text;
objAppResumeMasterClass.AppState1 = CurStateBox.Text;
objAppResumeMasterClass.AppCountry1 = CurCountrybox.Text;
objAppResumeMasterClass.AppAddress2 = PerAddBox.Text;
objAppResumeMasterClass.AppCity2 = PerCityBox.Text;
objAppResumeMasterClass.AppState2 = PerStateBox.Text;
objAppResumeMasterClass.AppCountry2 = PerCountrybox.Text;
objAppResumeMasterClass.AppEmail1 = emailBox.Text;
objAppResumeMasterClass.AppEmail2 = AltEmailBox.Text;
objAppResumeMasterClass.AppMobileNo = mobileNoBox.Text;
objAppResumeMasterClass.AppContactNo = phoneNoBox.Text;
objAppResumeMasterClass.AppDOB = Convert.ToDateTime(birthDateBox.Text);
objAppResumeMasterClass.AppKeySkill = skillsBox.Text;
objAppResumeMasterClass.AppGoal = goalBox.Text;
objAppResumeMasterClass.AppWeakness = weaknessBox.Text;
objAppResumeMasterClass.AppStrengths = strengthsBox.Text;
objAppResumeMasterClass.setVal(1);
}
DataTable Table = (DataTable)Session["CurTable"];
int cnt = Table.Rows.Count;
using(AppQualificationDetailClass objAppQualificationDetail = new AppQualificationDetailClass())
{
for (int RowCnt = 0; RowCnt < Table.Rows.Count; RowCnt++)
{
objAppQualificationDetail.AppId = Convert.ToInt32(MaxAppId) + 1;
objAppQualificationDetail.QualiId = Convert.ToInt32(Table.Rows[RowCnt][1]);
objAppQualificationDetail.Year = Convert.ToInt32(Table.Rows[RowCnt][3]);
objAppQualificationDetail.Percentage = (float)Table.Rows[RowCnt][2];
objAppQualificationDetail.InstiName = Table.Rows[RowCnt][4].ToString();
objAppQualificationDetail.setVal(1);
}
}
ExistMsgLbl.Text = Table.Rows[0][2].ToString();
}
catch (Exception ex)
{
throw ex;
}
}
protected void addRowBtn_Click(object sender, EventArgs e)
{
AddNewRow();
}
protected void InstituteLbl_PreRender(object sender, EventArgs e)
{
//Session.Add("Table", Table1);
}
public void setInitialRow()
{
DataTable Table = new DataTable();
DataRow dr = null;
Table.Columns.Add(new DataColumn("Qualification",typeof(string)));
Table.Columns.Add(new DataColumn("QualiId",typeof(string)));
Table.Columns.Add(new DataColumn("Percentage",typeof(string)));
Table.Columns.Add(new DataColumn("Passing Year",typeof(string)));
Table.Columns.Add(new DataColumn("Institute Name",typeof(string)));
dr = Table.NewRow();
dr["Percentage"] = string.Empty;
dr["Passing Year"] = string.Empty;
dr["Institute Name"]=string.Empty;
Table.Rows.Add(dr);
Session.Add("CurTable", Table);
GridView1.DataSource = Table;
GridView1.DataBind();
ArrayList Array = new ArrayList();
DataSet ds = new DataSet();
DropDownList DDL = (DropDownList)GridView1.Rows[0].Cells[0].FindControl("QualificationList");
FillDropDownList(DDL);
}
public void AddNewRow()
{
DataSet ds=new DataSet();
int RowIndex = 0;
if (Session["CurTable"] != null)
{
DataTable CurTable = (DataTable)Session["CurTable"];
DataRow CurRow = null;
if (CurTable.Rows.Count > 0)
{
CurRow = CurTable.NewRow();
CurTable.Rows.Add(CurRow);
Session.Add("CurTable", CurTable);
for (int count = 0; count < CurTable.Rows.Count - 1; count++)
{
DropDownList DDL = (DropDownList)GridView1.Rows[count].Cells[0].FindControl("QualificationList");
TextBox PercentageBox = (TextBox)GridView1.Rows[count].Cells[1].FindControl("percentageBox");
TextBox yearBox = (TextBox)GridView1.Rows[count].Cells[1].FindControl("yearBox");
TextBox InstituteNameBox = (TextBox)GridView1.Rows[count].Cells[1].FindControl("InstituteNameBox");
CurTable.Rows[count]["Percentage"] = PercentageBox.Text;
CurTable.Rows[count]["Passing Year"]=yearBox.Text;
CurTable.Rows[count]["Institute Name"]=InstituteNameBox.Text;
CurTable.Rows[count]["Qualification"]=DDL.SelectedItem.Text;
CurTable.Rows[count]["QualiId"] = DDL.SelectedValue;
}
GridView1.DataSource = CurTable;
GridView1.DataBind();
}
}
setPreviousData();
}
public void setPreviousData()
{
int RowIndex = 0;
if (Session["CurTable"] != null)
{
DataTable RestoreTable = (DataTable)Session["CurTable"];
if (RestoreTable.Rows.Count > 0)
{
for (int row = 0; row < RestoreTable.Rows.Count; row++)
{
DropDownList DPList = (DropDownList)GridView1.Rows[row].Cells[0].FindControl("QualificationList");
TextBox PercentageBox = (TextBox)GridView1.Rows[row].Cells[1].FindControl("percentageBox");
TextBox YearBox = (TextBox)GridView1.Rows[row].Cells[2].FindControl("yearBox");
TextBox InstituteName = (TextBox)GridView1.Rows[row].Cells[3].FindControl("InstituteNamebox");
FillDropDownList(DPList);
if (row < RestoreTable.Rows.Count - 1)
{
PercentageBox.Text = RestoreTable.Rows[row]["Percentage"].ToString();
YearBox.Text = RestoreTable.Rows[row]["Passing Year"].ToString();
InstituteName.Text = RestoreTable.Rows[row]["Institute Name"].ToString();
DPList.ClearSelection();
DPList.Items.FindByText(RestoreTable.Rows[row]["Qualification"].ToString()).Selected = true;
}
RowIndex++;
}
}
}
}
private ArrayList FillArrayList()
{
ArrayList ArrayList = new ArrayList();
DataSet ds = new DataSet();
using(DataOperation oDo = new DataOperation())
{
ds =oDo.DropDownList("select * from tblQualificationMaster");
for(int count=0;count<ds.Tables[0].Rows.Count;count++)
{
ArrayList.Add(new ListItem(ds.Tables[0].Rows[count][1].ToString(), ds.Tables[0].Rows[count][0].ToString()));
}
}
return ArrayList;
}
private void FillDropDownList(DropDownList DDL)
{
ArrayList ArrayList = FillArrayList();
foreach (ListItem item in ArrayList)
{
DDL.Items.Add(item);
}
}
}

Answer 1

Use ViewState instead of Session.