How to change Image name and Video name before saving to Database using C# in ASP.Net

Hi micah,

Please refer the below code and modify as per your requirement.

 HTML

   <asp:Image ID="Image1" runat="server" class="" Style="width: 50%" ImageUrl='<%# "UserImage/"+Eval("FileName")%>' />

C#

protected void LinkBPOST_Click(object sender, EventArgs e)
{
    string fileNameWithoutExtension = System.IO.Path.GetFileNameWithoutExtension(System.IO.Path.GetRandomFileName());
    string folderPath = Server.MapPath("~/path/"); //Please enter your folder Name here.
    string ImagefolderPath = Server.MapPath("~/UserImage/"); //Please enter your folder Name here.
    if (this.Page.User.Identity.IsAuthenticated)
    {
        string username = this.Page.User.Identity.Name;
        {
            string tendString = TextBixcomment.Text.Trim();
            string strname = "";
            string extension = "";
            string getADPOST = "";
            string str = ConfigurationManager.ConnectionStrings["DB"].ConnectionString;
            if (FileUploadpost.HasFile)
            {
                strname = FileUploadpost.FileName.ToString();
                extension = System.IO.Path.GetExtension(strname);
                using (SqlConnection con = new SqlConnection(str))
                {
                    SqlCommand cmd = new SqlCommand();
                    // Image extension.
                    if (extension.ToLower() == ".jpg" || extension.ToLower() == ".png" || extension.ToLower() == ".gif" || extension.ToLower() == ".jpeg")
                    {
                        getADPOST = "Insert INTO USERPost (UserName,ContentPost,ImageName1) values (@UserName,@ContentPost,@ImageName1)";
                        cmd.Parameters.AddWithValue("@ContentPost", TextBixcomment.Text.Replace(Environment.NewLine, "<br/>").Trim());
                        cmd.Parameters.AddWithValue("@UserName", Session["userName"]);
                        cmd.Parameters.AddWithValue("@ImageName1",fileNameWithoutExtension + extension);
                        FileUploadpost.SaveAs(ImagefolderPath + fileNameWithoutExtension + extension); //save file from fileUpload to folder here.
                    }
                    // Video extension.
                    else if (extension.ToLower() == ".mp4" || extension.ToLower() == ".wmv" || extension.ToLower() == ".flv" || extension.ToLower() == ".vob" || extension.ToLower() == ".dat")
                    {
                        getADPOST = "Insert INTO USERPost (UserName,ContentPost,Path) values (@UserName,@ContentPost,@Path)";
                        cmd.Parameters.AddWithValue("@ContentPost", TextBixcomment.Text.Replace(Environment.NewLine, "<br/>").Trim());
                        cmd.Parameters.AddWithValue("@UserName", Session["userName"]);
                        cmd.Parameters.AddWithValue("@Path", "path/" + fileNameWithoutExtension + extension);
                        FileUploadpost.SaveAs(folderPath + fileNameWithoutExtension + extension); //save file from fileUpload to folder here.
                    }
                    cmd.CommandText = getADPOST;
                    cmd.CommandType = System.Data.CommandType.Text;
                    cmd.Connection = con;
                    con.Open();
                    cmd.ExecuteNonQuery();
                    con.Close();
                    string message = "Post submitted successfully.";
                    ClientScript.RegisterStartupScript(this.GetType(), "Pop", "openModal5('" + message + "');", true);
                }
            }

            else
            {
                string message = "Please select any Video Or Image file!";
                string script = "window.onload = function(){ alert('";
                script += message;
                script += "')};";
                Page.ClientScript.RegisterStartupScript(this.GetType(), "SuccessMessage", script, true);
            }
        }
    }

    this.Populatebooks();
}