Hi akhter,

Use encoding QueryString to get your data.

Refer below sample.

Encode QueryString parameter in NavigateUrl of HyperLink inside ASP.Net GridView

HTML

Home.aspx

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false">
    <Columns>
        <asp:BoundField DataField="Name" HeaderText="Name" ItemStyle-Width="150" />
        <asp:TemplateField>
            <ItemTemplate>
                <asp:HyperLink ID="HyperLink2" runat="server" NavigateUrl='<%# string.Format("~/Details.aspx?Name={0}",
            HttpUtility.UrlEncode(Eval("Name").ToString()) )%>' Text="View Details" />
            </ItemTemplate>
        </asp:TemplateField>
    </Columns>
</asp:GridView>

Details.aspx

<asp:Label ID="lblName" runat="server"></asp:Label>

Namespaces

C#

using System.Data;

VB.Net

Imports System.Data

Code

C#

Home.aspx.cs

protected void Page_Load(object sender, EventArgs e)
{
    if (!this.IsPostBack)
    {
        DataTable dt = new DataTable();
        dt.Columns.Add("Name");
        dt.Rows.Add("HAT-K # 01");
        dt.Rows.Add("HAT-K # 02");
        dt.Rows.Add("HAT-K # 03");
        dt.Rows.Add("HAT-K # 04");
        GridView1.DataSource = dt;
        GridView1.DataBind();
    }
}

Details.aspx.cs

protected void Page_Load(object sender, EventArgs e)
{
    lblName.Text = HttpUtility.UrlDecode(Request.QueryString["Name"]);
}

VB.Net

Home.aspx.vb

Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load
    If Not Me.IsPostBack Then
        Dim dt As DataTable = New DataTable()
        dt.Columns.Add("Name")
        dt.Rows.Add("HAT-K # 01")
        dt.Rows.Add("HAT-K # 02")
        dt.Rows.Add("HAT-K # 03")
        dt.Rows.Add("HAT-K # 04")
        GridView1.DataSource = dt
        GridView1.DataBind()
    End If
End Sub

Details.aspx.vb

Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load
    lblName.Text = HttpUtility.UrlDecode(Request.QueryString("Name"))
End Sub

Screenshot