Excel file is in server path i need to read from there

Try below solution.

Define the source folder path (local folder path or server folder path) and the destination archive folder path.

string sourceFolderPath = @"\\servername\foldername";
string archiveFolderPath = @"\\servername\archivefoldername";

Use the System.IO namespace to get the files from the source folder path.

string[] filePaths = Directory.GetFiles(sourceFolderPath);

Loop through the file paths and perfrom your import logic

Once the data is imported, use the File.Move method to move the file to the archive folder. bulk copy method to import the data from the Excel file to SQL. 

foreach (string filePath in filePaths)
{
    string fileName = Path.GetFileName(filePath);
    string destinationPath = Path.Combine(archiveFolderPath, fileName);
    File.Move(filePath, destinationPath);
}

Thanks

Naimish