How to read file to populate image base on values input

Question

Hello,

I am stucked in this part, there are 2 things that I need to get resolved;

1) I need to populate the whole path as soon as I upload the file. Until now I am hard coding the whole path because when I upload the file does not read the whole path.

2) once I found the image name and extension according to the values I insert in the input text, whether in check numbers or amount or date, retrieve the image view.

Could you help me, please? Before I post it I look in Google and Stackoverflow but I could not find anything nearly similar.

Thank you,

public partial class Conversion : System.Web.UI.Page
    {
        protected void Button1_Click(object sender, EventArgs e)
        {
            try
            {

                if (!FileUpload1.HasFiles) //Validation
                {
                    Response.Write("No file Selected"); return;
                }
                else
                {
                    // Read and Extract Information from the Index.txt File:

                    string path = ConfigurationManager.AppSettings["ImageBasePath"];

                 
                    var files = Directory.GetFiles(path, "index.txt", SearchOption.AllDirectories);

                    // Read and populate textboxes from Index.txt
                    string filePath = Path.Combine(files);


                    var lines = File.ReadAllLines(Path.Combine(filePath));

                    //var lines = File.ReadAllLines(filePath);
                    foreach (var line in lines)

                    {
                        var parts = line.Split('|');
                        if (parts.Length >= 9)
                        {
                            // Extract required information
                            string acctNumber = parts[0];
                            string chkNumber = parts[1];
                            string chkAmount = parts[2];
                            string imgDate = parts[5];
                            string imagePath = parts[8];

                            // Populate the textboxes
                            acctNumber = txtacctNumber.ToString();
                            chkNumber = txtchkNumber.ToString();
                            chkAmount = txtchkAmount.ToString();
                            imgDate = txtimgDate.ToString();

                            //Store the imagePath if needed
                            ViewState["ImagePath"] = imagePath;

                            // break; // Remove this if you want to handle multiple lines
                        }

                            // Extract values from textboxes
                            string acctNumbers = txtacctNumber.Value;
                            string chkNumbers = txtchkNumber.Value;
                            string chksAmount = txtchkAmount.Value;
                            string imgDates = txtimgDate.Value;
                            string imagePaths = ViewState["ImagePath"].ToString();

                            // Retrieve the base path from the configuration
                            string basePath = ConfigurationManager.AppSettings["ImageBasePath"];

                            // Construct the full path to the image file
                            string fullImagePath = Path.Combine(basePath, imagePaths);

                            //Populate image on website


                        { 

                            Response.Write("Image has been Added");
                        }
                    }
                }
            }
            catch (Exception ex)
            {
                // Handle any exceptions that occurred
                Console.WriteLine("An error occurred while reading the file: " + ex.Message);
            }
        }
        
 
    }