How do I save the file path when files are downloaded from gridview in ASP.NET

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C#

ASP.NET

SQL

Visual-Studio

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So i have a gridview that displays image name,images and image link to download from the SQL server database. I want to save the image path in database once an image is downloaded (upon link button click) in a separate db table. Please help me! I need this asap ;(
This Image download webform is connected to my another webform-image upload which has ImgPath (nvarchar255) field.





Below are my codes:

Overview: What i have so far
1. Gridview of images and image links
2.Gridview is retrieved from database
3.Able to download the image


What i need:
1.When image is downloaded--> Save the image path to sql server database

What I have tried:

aspx:

     <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false" OnRowCommand="GridView1_RowCommand">
                        <Columns>
                     
                            <asp:BoundField HeaderText="ID" DataField="AdvID" />
                            <asp:BoundField HeaderText="Name" DataField="Name" />
                            <asp:BoundField HeaderText="Item" DataField="Item" />
                            <asp:ImageField HeaderText="Image" DataImageUrlField="ImgPath" ControlStyle-Height="120" ControlStyle-Width="140">
                                <ControlStyle Height="120px" Width="140px"></ControlStyle>
                            </asp:ImageField>
                            <asp:TemplateField HeaderText="View Information">
                                <ItemTemplate>
                                    <asp:LinkButton ID="lnkView" runat="server" CommandArgument='<%#Eval("AdvID") %>' OnClick="lnk_OnClick">View</asp:LinkButton>
                                </ItemTemplate>
                            </asp:TemplateField>
                            <asp:TemplateField HeaderText="DownloadLink">
                                <ItemTemplate>
                                    <asp:LinkButton ID="LinkButton1" runat="server" CommandArgument='<%# Eval("Item") %>' Text='<%# Eval("Item") %>' CommandName="Download"></asp:LinkButton>
                                </ItemTemplate>
                            </asp:TemplateField>
                        </Columns>
                    </asp:GridView>



aspx.cs:

public partial class AdvGridView : System.Web.UI.Page
{

    SqlConnection sqlCon = new SqlConnection(ConfigurationManager.ConnectionStrings["connect"].ToString());
 
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!this.IsPostBack)
        {
            this.BindGrid();
        }
    }

    protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
    {
        if (e.CommandName == "Download")
        {

            Response.Clear();
            Response.ContentType = "application/octect-stream";
            Response.AppendHeader("content-disposition", "filename=" + e.CommandArgument);
            Response.TransmitFile(Server.MapPath("~/Images/") + e.CommandArgument);
            Response.End();

         
        }
    }
    void FillGridView()
    {
        if (sqlCon.State == ConnectionState.Closed)
            sqlCon.Open();
        SqlDataAdapter sqlDa = new SqlDataAdapter("ViewAll", sqlCon);
        sqlDa.SelectCommand.CommandType = CommandType.StoredProcedure;
        DataTable dtbl = new DataTable();
        sqlDa.Fill(dtbl);
        sqlCon.Close();
        GridView1.DataSource = dtbl;
        GridView1.DataBind();
    }

    protected void lnk_OnClick(object sender, EventArgs e)
    {
        int AdvertisementID = Convert.ToInt32((sender as LinkButton).CommandArgument);
        if (sqlCon.State == ConnectionState.Closed)
            sqlCon.Open();
        SqlDataAdapter sqlDa = new SqlDataAdapter("ViewByID", sqlCon);
        sqlDa.SelectCommand.CommandType = CommandType.StoredProcedure;
        sqlDa.SelectCommand.Parameters.AddWithValue("@AdvID", AdvertisementID);
        DataTable dtbl = new DataTable();
        sqlDa.Fill(dtbl);

        sqlCon.Close();

    }

    private void BindGrid()
    {
        GridViewService.WebService service = new GridViewService.WebService();
        GridView1.DataSource = service.Get();
        GridView1.DataBind();
    }



}