ASP.NET Gridview Header column not freezing properly

Question

I'm using gridview with freezing header in ASP.NET application.

But, freezing is not showing while running the application.

what is the issue in the below code...?

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Test_Pagination.aspx.cs" Inherits="Test_Pagination" %>



    Test - Grid Freeze
    
    
    
    
    
    
    
     <%-- //********* Script for myModel - Modal Popup  ******************//--%>
 
 <%----%>
 
 
 <%--  //********* Script for myModel  - Modal Popup  ******************//--%>
     <%-- //***** for search dropdown stylesheet and js files *************--%>
 <%----%>
 
 <%----%>
 <%----%>
 
 
  
    
    


    
        
            
                
                
                    
                        
                        Invoice Details
                    
                    
                        
                            
                                
                                
                            
                            
                                
                            
                            
                                
                            
                        
                    
                
            
        
        
        
            
                
                    
                        
                            
                            
                            
                        
                        
                            
                                
                            
                        
                    
                
            
        
        
            
                
                    
                        
                        
                            
                                
                                    
                                
                                
                                    
                                
                            
                            
                                
                                    
                                
                            
                            
                                
                                    Sl No.
                                
                                
                                    <%# Container.DataItemIndex + 1 %>
                                
                                
                            
                            
                                
                                    Emp No.
                                
                                
                                    
                                
                            
                              
                        
                            Emp Name.
                        
                        
                            
                        
                    
                            
                                
                                    
                                        View File

ASPX.CS
* *******
using System;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Configuration;
using System.IO;
namespace Test
{
    public partial class Test_Pagination : System.Web.UI.Page
    {
        private string str = ConfigurationManager.ConnectionStrings["Connection"].ConnectionString;
        string sRoot = @"\net.venem.intranet\srv1\Team10\IT\AccFiles\";
        DataTable rstData = new DataTable();
        private DataSet ds = new DataSet();
        public string EmpNo = string.Empty;
        public string EmpName = string.Empty;
        private string filename = string.Empty;
        private string FileType = String.Empty;
        //private DateTime dtBillDate;
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                try
                {
                    //****** To get emp name and assign to label
                    //lblFileUploadName.Text = "";
                    if (HttpContext.Current.Session["Empno"] == null)
                    {
                        Response.Redirect("SessionExpired.aspx");
                    }
                    else
                    {
                        EmpName = HttpContext.Current.Session["EmpName"].ToString();
                        EmpNo = HttpContext.Current.Session["Empno"].ToString();
                        //lblEmpName.Text = string.Concat(EmpName, StrHyphen, EmpNo);
                    }
                    GetEmpDetails();
                    GetEmpAccDetails();
                    Session["rstData"] = rstData;
                }
                catch (Exception ex)
                {
                }
                finally
                {
                    // ds = Nothing
                    // ds.Dispose()
                }
            }
            else
            {
                rstData = Session["rstData"] as DataTable;
            }
            foreach (var item in gvCustomer.Rows)
            {
                LinkButton btnDisplay = (LinkButton)((GridViewRow)item).FindControl("lnkBtnView");
                // Get current ScriptManager on the page
                ScriptManager.GetCurrent(this.Page).RegisterPostBackControl(btnDisplay);
                if (!string.IsNullOrEmpty(btnDisplay.CommandArgument))
                {
                    ScriptManager.GetCurrent(this.Page).RegisterPostBackControl(btnDisplay);
                }
            }
        }
        private void GetEmpDetails()
        {
            try
            {
                dbConn.sqlCmd.Parameters.Clear();
                dbConn.sqlCmd.Parameters.AddWithValue("@Spd_TYPE", "GET_EmpList");
                ds = dbConn.XcuteResult(str, CommandType.StoredProcedure, "Spd_EmpDetails_Master");
                drpEmployee.DataSource = ds.Tables[0].DefaultView;
                drpEmployee.DataTextField = ds.Tables[0].Columns[0].ColumnName;
                drpEmployee.DataValueField = ds.Tables[0].Columns[0].ColumnName;
                drpEmployee.DataBind();
            }
            catch (Exception ex)
            {
            }
            finally
            {
                ds = null;
            }
        }
        private void GetEmpAccDetails()
        {
            try
            {
                dbConn.sqlCmd.Parameters.Clear();
                dbConn.sqlCmd.Parameters.AddWithValue("@Spd_Type", "GetEmpAccDetails");
                //dbConn.sqlCmd.Parameters.AddWithValue("@Spd_Flag", Flag.ToString().Trim());
                ds = dbConn.XcuteResult(str, CommandType.StoredProcedure, "Spd_EmpDetails_Master");
                if ((ds.Tables[0].Rows.Count > 0))
                {
                    //gvBills.Visible = true;
                    rstData = ds.Tables[0];
                    gvCustomer.DataSource = rstData;
                    gvCustomer.DataBind();
                    //lblNoRecord.Visible = false;
                }
                else
                {
                }
            }
            catch (Exception ex)
            {
            }
            finally
            {
                ds = null;
            }
        }
        protected void btnSearch_Click(object sender, EventArgs e)
        {
            string ddlEmpvalue = string.Empty;
            if (drpEmployee.SelectedValue == "")
            {
                ddlEmpvalue = "";
            }
            else
            {
                ddlEmpvalue = drpEmployee.SelectedValue;
            }
            try
            {
                dbConn.sqlCmd.Parameters.Clear();
                dbConn.sqlCmd.Parameters.AddWithValue("@Spd_TYPE", "Search_EmpDetails");
                dbConn.sqlCmd.Parameters.AddWithValue("@Spd_EmpNo", ddlEmpvalue.ToString().Trim()); //Employee value
                ds = dbConn.XcuteResult(str, CommandType.StoredProcedure, "Spd_EmpDetails_Master");
                if (ds.Tables[0].Rows.Count > 0)
                {
                    gvCustomer.DataSource = ds.Tables[0];
                    gvCustomer.DataBind();
                }
                else
                {
                    ds.Tables[0].Rows.Add(ds.Tables[0].NewRow());
                    gvCustomer.DataSource = ds.Tables[0];
                    gvCustomer.DataBind();
                    int TotalColumns = gvCustomer.Rows[0].Cells.Count;
                    gvCustomer.Rows[0].Cells.Clear();
                    //gvCustomer.Rows[0].Cells.Add(new TableCell());
                    gvCustomer.Rows[0].Cells[0].ColumnSpan = TotalColumns;
                    gvCustomer.Rows[0].Cells[0].Text = "No record(s) Found";
                }
            }
            catch (Exception ex)
            {
            }
            finally
            {
                ds = null;
            }
        }
        protected void btnClear_Click(object sender, EventArgs e)
        {
            drpEmployee.SelectedIndex = -1;
            GetEmpAccDetails();
        }
        protected void Display(object sender, EventArgs e)
        {
            Session["FPath"] = null;
            int rowIndex = Convert.ToInt32(((sender as LinkButton).NamingContainer as GridViewRow).RowIndex);
            GridViewRow row = gvCustomer.Rows[rowIndex];
            string FPath = (row.FindControl("HiddenField1") as HiddenField).Value;
            Session["FPath"] = FPath;
            HiddenField HiddenField1 = (row.FindControl("HiddenField1") as HiddenField);
            string FileName = (row.FindControl("HdnFileName") as HiddenField).Value;
            string sMineType = MimeMapping.GetMimeMapping(FPath);
            if (!string.IsNullOrEmpty(FPath))
            {
                if (File.Exists(FPath))
                {
                    lblFileName.Text = FileName.ToString();
                    byte[] rawFile = File.ReadAllBytes(FPath);
                    iframe.Attributes["src"] = $@"data:{sMineType};base64,{Convert.ToBase64String(rawFile)}";
                    ScriptManager.RegisterStartupScript(this, this.GetType(), "Pop", "openModal();", true);
                }
                else
                {
                    ScriptManager.RegisterStartupScript(this, this.GetType(), "No Data", "alert(\'File is missing in the folder..!.\');", true);
                }
            }
            else
            {
                ScriptManager.RegisterStartupScript(this, this.GetType(), "No Data", "alert(\'No data found..!.\');", true);
            }
            HiddenField1.Visible = false; //Hide the path
        }
    }
}

Accepted Answer

Hi @BeUnique ,

You could try this below code to freeze the header

WebForm1.aspx:

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="WebApplication2.WebForm1" %>



    GridView Header Freeze

WebForm1.aspx.cs:

using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace WebApplication2
{
    public partial class WebForm1 : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                BindGrid();
            }
        }
        private void BindGrid()
        {
            // Sample Data
            DataTable dt = new DataTable();
            dt.Columns.Add("Id");
            dt.Columns.Add("EmpId");
            dt.Columns.Add("EmpName");
            for (int i = 1; i <= 20; i++)
            {
                dt.Rows.Add(i, "EMP" + i.ToString("D3"), "Employee " + i);
            }
            gvCustomer.DataSource = dt;
            gvCustomer.DataBind();
        }
    }
}

User's image

Best Regards,

Jalpa

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ASP.NET Gridview Header column not freezing properly

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