c# - split string in single lines and save the data -

i try split array in single lines , save xml file. ipaddress. can put strings under each other. 1 long string

i have this:

internal void deserialize(product product) {         xelement settings = xelement.parse(product.authenticationsettings ?? "<settings/>");          if (settings == null || settings.attribute("authenticationrequired") == null || settings.attribute("authenticationrequired").value != "true")             return;          xelement conditions = settings.element("preconditions");         if (conditions == null)             return;          //xelement[] conditions2 = settings.element[("preconditions")];         //if (conditions == null)         //    return;           xelement condition = conditions.element("residentsonly");         if (condition!= null)             this.residentsonly = (condition.value == "1");          condition = conditions.element("minimumage");         if (condition != null) {             int age = 0;             if (int32.tryparse(condition.value, out age))                 this.minimumage = age;         }          condition = conditions.element("redirecturl");         if (condition != null) {             this.redirecturl = condition.value;         }     condition = conditions.element("ipaddress");         if (condition != null) {              string[] lines =  ipaddress.split(new string[] { environment.newline }, stringsplitoptions.none);             //condition = ipaddress.split(new string[] { environment.newline }, stringsplitoptions.none);             (int = 0; < lines.length; i++) {                 if ( lines[i] != null){                 lines[i] = condition.value.tostring();             }                 //lines = string.join("\n", condition.value.toarray());             }           }     } 

it ipaddress.

but problem lines null. thank you.

this ipaddress:

 [display(name = "preconditionipaddress", resourcetype = typeof(resources.entity.product))]         public string ipaddress { get; set; } 

this serialize method:

internal string serialize(editproductmodel model) {             if (this.residentsonly == false && this.minimumage == 0)                 return model.product.authenticationsettings;              xelement settings = xelement.parse(model.product.authenticationsettings ?? "<settings/>");             if (settings == null || settings.attribute("authenticationrequired") == null || settings.attribute("authenticationrequired").value != "true")                 return model.product.authenticationsettings;              settings.add(                 new xelement("preconditions",                     new xelement("residentsonly", this.residentsonly ? "1" : "0"),                     new xelement("minimumage", this.minimumage),                     new xelement("redirecturl", this.redirecturl),                     new xelement("ipaddress", this.ipaddress)                 )             );              return settings.tostring();         } 

i have this:

public class preconditionsettings     {         [display(name = "preconditionresidentsonly", resourcetype = typeof(resources.entity.product))]         public bool residentsonly { get; set; }          [display(name = "preconditionminimumage", resourcetype = typeof(resources.entity.product))]         public int minimumage { get; set; }          [sfshelpers.preconditionredirectvalidation(errormessageresourcetype = typeof(resources.entity.product), errormessageresourcename="preconditionredirecturlvalidation")]         [display(name = "preconditionredirecturl", resourcetype = typeof(resources.entity.product))]         public string redirecturl { get; set; }          [display(name = "preconditionipaddress", resourcetype = typeof(resources.entity.product))]         public string ipaddress { get; set; }          public preconditionsettings() {             this.residentsonly = false;             this.minimumage = 0;             this.redirecturl = null;             this.ipaddress = null;         }           public static string[] replacer(dictionary<string, string> dic, string ipaddress)         {             foreach (keyvaluepair<string, string> entry in dic) {                 ipaddress = ipaddress.replace(entry.key, entry.value);             }             string[] lines = ipaddress.split(new string[] { environment.newline }, stringsplitoptions.none);              return lines;         }          internal string serialize(editproductmodel model) {             if (this.residentsonly == false && this.minimumage == 0)                 return model.product.authenticationsettings;              xelement settings = xelement.parse(model.product.authenticationsettings ?? "<settings/>");             if (settings == null || settings.attribute("authenticationrequired") == null || settings.attribute("authenticationrequired").value != "true")                 return model.product.authenticationsettings;              settings.add(                 new xelement("preconditions",                     new xelement("residentsonly", this.residentsonly ? "1" : "0"),                     new xelement("minimumage", this.minimumage),                     new xelement("redirecturl", this.redirecturl),                     new xelement("ipaddress", this.ipaddress)                 )             );              return settings.tostring();         }          internal void deserialize(editproductmodel model) {             deserialize(model.product);         }          internal void deserialize(product product) {             xelement settings = xelement.parse(product.authenticationsettings ?? "<settings/>");              if (settings == null || settings.attribute("authenticationrequired") == null || settings.attribute("authenticationrequired").value != "true")                 return;              xelement conditions = settings.element("preconditions");             if (conditions == null)                 return;                          xelement condition = conditions.element("residentsonly");             if (condition!= null)                 this.residentsonly = (condition.value == "1");              condition = conditions.element("minimumage");             if (condition != null) {                 int age = 0;                 if (int32.tryparse(condition.value, out age))                     this.minimumage = age;             }              condition = conditions.element("redirecturl");             if (condition != null) {                 this.redirecturl = condition.value;             }                           condition = conditions.element("ipaddress");                          if (condition != null) {                  ipaddress = "";                 dictionary<string, string> dic = new dictionary<string, string>();                 dic.add("<ipaddress>", string.empty);                 dic.add("</ipaddress>", string.empty);                 dic.add(" ", environment.newline);                 replacer(dic, ipaddress);                 this.ipaddress = condition.value;               }         }     } 

now output is: 777777 99999999 8888888 .

but has be:

<ipaddress>77777777</ipaddress> <ipaddress>99999999999</ipaddress> <ipaddress>888888888888</ipaddress> 

thank you

how this?

here's method call:

        string somedata = "";         dictionary<string, string> dic = new dictionary<string, string>();         dic.add("<ipaddress>", string.empty);         dic.add("</ipaddress>", string.empty);         dic.add(" ", environment.newline);         string[] data = replacer(dic, somedata);         data = wrapper(data, "ipaddress");         string result = combiner(data); 

here's method itself:

    public static string[] replacer(dictionary<string,string> dic, string data)      {         foreach (keyvaluepair<string,string> entry in dic)         {             data = data.replace(entry.key, entry.value);         }         string[] delimiters = new string[] { environment.newline, " " };         string[] lines =  data.split(delimiters ,stringsplitoptions.removeemptyentries);          return lines;     }   public static string[] wrapper(string[] data, string tag) {    string tagopen, tagclose;    tagopen = "<" + tag + ">";    tagclose = "</" + tag + ">";    for(int = 0; < data.length; i++)    {        data[i] = tagopen + data[i] + tagclose;    }     return data; }   public static string combiner(string[] data) {    string res = string.empty;    for(int = 0; < data.length; i++)    {        res += data[i] + environment.newline;    }     return res; }