Problem with line of code System.Web.UI.Page.RegisterStartupScript(string, string)

Question

User-1004886483 posted

Hi, when i load my solution i have the following alert :

'System.Web.UI.Page.RegisterStartupScript(string, string)' est obsolète : 'The recommended alternative is ClientScript.RegisterStartupScript(Type type, string key, string script). http://go.microsoft.com/fwlink/?linkid=14202' C:\Projets\MYPROGWebsite\MYPROGWebsite\Transfertfichier.aspx.cs 168

this is the code of the page Transfertfichier.aspx.cs :

    /// <summary>
    ///  Effacer les lettres temporaires du serveur
    /// </summary>
    private void ViderDossier(string folderPath)
    {
        try
        {
            if (!string.IsNullOrEmpty(folderPath))
            {
                DirectoryInfo dir = new DirectoryInfo(folderPath);
                foreach (FileInfo file in dir.GetFiles())
                {
                    file.Delete();
                }
            }
        }
        catch (IOException ex)
        {
            Page.RegisterStartupScript("Exception", "alert('" + ex.Message + "');");
        }
    }
    #endregion

how to fix this?

Answer 1

User283571144 posted

Hi devquestionsanswers,

'System.Web.UI.Page.RegisterStartupScript(string, string)' est obsolète : 'The recommended alternative is ClientScript.RegisterStartupScript(Type type, string key, string script). http://go.microsoft.com/fwlink/?linkid=14202' C:\Projets\MYPROGWebsite\MYPROGWebsite\Transfertfichier.aspx.cs 168

According to your error message, it shows you used the Page.RegisterStartupScript method which is out of date. It suggest you use ClientScriptManager.RegisterStartupScript Method.

Please modify the codes as below:

    private void ViderDossier(string folderPath)
    {
        try
        {
            if (!string.IsNullOrEmpty(folderPath))
            {
                DirectoryInfo dir = new DirectoryInfo(folderPath);
                foreach (FileInfo file in dir.GetFiles())
                {
                    file.Delete();
                }
            }
        }
        catch (IOException ex)
        {
            ClientScript.RegisterStartupScript(this.GetType(), "Exception", "alert('" + ex.Message + "');");
        }
    }

Best Regards,

Brando