hello to you please I have a little problem I have a gridview in which I applied a display condition. I would put a button returns all the lines displayed when you click on it

david 237 41 Reputation points

<asp:GridView ID="Gridview1" class="mx-auto" runat="server" AutoGenerateColumns="False" OnRowDataBound="Gridview1_RowDataBound"
KeyNames="Id_Task" AllowPaging="True" PageSize="6" DataSourceID="SqlDataSource1" CellPadding="6" ForeColor="#333333" GridLines="Vertical">
<AlternatingRowStyle BackColor="White" />
<asp:BoundField DataField="Id_Task" HeaderText="Id_Task" SortExpression="Id_Task" Visible="false" />
<asp:BoundField DataField="Taches a faire" HeaderText="Taches a faire" SortExpression="Taches a faire" />
<asp:BoundField DataField="Username" HeaderText="Username" SortExpression="Username" />
<asp:BoundField DataField="date de requete" HeaderText="date de requete" SortExpression="date de requete" />
<asp:BoundField DataField="deadline" HeaderText="deadline" SortExpression="deadline" />
<asp:BoundField DataField="Status" HeaderText="Status" SortExpression="Status" />
<asp:HyperLinkField Text="Details" DataNavigateUrlFields="Id_Task,Taches a faire,Username,date de requete" DataNavigateUrlFormatString="~/Admin/NewPage.aspx?Id_Task={0}&Taches a faire={1}&Username={2}&date de requete={3}" />

            <FooterStyle BackColor="#990000" Font-Bold="True" ForeColor="White" />  
            <HeaderStyle BackColor="#990000" Font-Bold="True" ForeColor="White" />  
            <PagerStyle BackColor="#FFCC66" ForeColor="#333333" HorizontalAlign="Center" />  
            <RowStyle BackColor="#FFFBD6" ForeColor="#333333" />  
            <SelectedRowStyle BackColor="#FFCC66" Font-Bold="True" ForeColor="Navy" />  
            <SortedAscendingCellStyle BackColor="#FDF5AC" />  
            <SortedAscendingHeaderStyle BackColor="#4D0000" />  
            <SortedDescendingCellStyle BackColor="#FCF6C0" />  
            <SortedDescendingHeaderStyle BackColor="#820000" />  


using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

public partial class Task_ListTask : System.Web.UI.Page
protected void Page_Load(object sender, EventArgs e)

protected void Gridview1_RowDataBound(object sender, GridViewRowEventArgs e)  
    if (e.Row.RowType == DataControlRowType.DataRow)  
        DataTable dt = new DataTable();  
        dt = (DataTable)Gridview1.DataSource;  
        int rowindex = e.Row.RowIndex;  
        e.Row.Attributes.Add("class", "customerRow");  
    if (e.Row.RowType == DataControlRowType.DataRow)  
        if (e.Row.Cells[5].Text.Equals("Finished"))  
            e.Row.BackColor = System.Drawing.Color.DarkGreen;  
            e.Row.ForeColor = System.Drawing.Color.White;  
            e.Row.Visible = false;  



protected void Button1_Click(object sender, EventArgs e)  



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  1. Lan Huang-MSFT 15,211 Reputation points Microsoft Vendor

    Hi @david 237 ,
    You iterate over all rows and display them.

     protected void Button1_Click(object sender, EventArgs e)  
               for (int i = 0 ; i < Gridview1.Rows.Count; i++)  
                    Gridview1.Rows[i].Visible = true;                

    Best regards,
    Lan Huang

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