Updating a xml file from form fields in C# .net

Question

Hi I have the following class which provides access to a xml file:

public class AppConfig
{
    public string AppConfigPath = "~/admin.config.xml";
    XmlDocument SiteConfig = new XmlDocument();

    public string getAppConfigParam(string param) 
    {

        SiteConfig.Load(HttpContext.Current.Server.MapPath(AppConfigPath));
        string reqParam = SiteConfig.SelectSingleNode("//cmsAppConfig")[param].InnerText;
        return reqParam;
    }

    public void setAppConfigParam(string paramTitle, string paramValue) 
    {
        SiteConfig.Load(HttpContext.Current.Server.MapPath(AppConfigPath));

        XmlNodeList ConfigNodes = SiteConfig.SelectSingleNode("//cmsAppConfig").ChildNodes;

        foreach (XmlNode node in ConfigNodes) 
        {
            if (node.Name == paramTitle) 
            {
                node.InnerText = paramValue;
            }
        }

        SiteConfig.Save(HttpContext.Current.Server.MapPath(AppConfigPath));
        HttpContext.Current.Response.Redirect(HttpContext.Current.Request.RawUrl);
    }

}

I am using the class in the following event to update some app settings but only the first node which is the globalskin gets updated.

protected void btnSaveAppConfig_Click(object sender, EventArgs e)
{

    if (IsValid) {
        AppConfig myAppConfig = new AppConfig();
        myAppConfig.setAppConfigParam("globalskin", drpAppTheme.SelectedValue.ToString());
        myAppConfig.setAppConfigParam("homefeedsurl", txtNewsFeedUrl.Text.Trim());
        myAppConfig.setAppConfigParam("homefeedstitle", txtNewsFeedTitle.Text.Trim());
    }
}

What changes to do I need to make to make the change to all fields? Thank you for your time.

The docs state "The Initialize method must be called before this method can be used."...have you done that? http://msdn.microsoft.com/en-us/library/ee784825(v=CS.20).aspx — Aaron McIver, Dec 09 '10 at 20:50

score 1 · Accepted Answer · answered Dec 09 '10 at 20:55

1

I suspect that this line in your setAppConfigParam method:

HttpContext.Current.Response.Redirect(HttpContext.Current.Request.RawUrl);

Is causing an immediate redirect, so that the other two calls to setAppConfigParam never even get executed.

answered Dec 09 '10 at 20:55

Jim Mischel

131,090
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score 0 · Answer 2 · edited May 23 '17 at 11:47

0

Is this xml file your web config (or 'critical file')? If so, then when you save the config file, it's restarting your appdomain. Is there a reason you're treating the config file as a plain old xml doc? If it is, in fact, a .net configuration file, try this method...

edited May 23 '17 at 11:47

Community

1
1

answered Dec 09 '10 at 20:55

Cj S.

1,173
8
13

This file is not the .net app config file. it's just a normal xml file which holds information about user skin, news feeds path etc – makeitmorehuman Dec 09 '10 at 21:02

Updating a xml file from form fields in C# .net

2 Answers2