c# XML nodelist to datagrid - C# Discussion Boards

Tejas Vaishnav26-Aug-14 21:09

26-Aug-14 21:09

I have created an application to encrypt selected files with password protection, it will accept files like word and pdf, everything work perfect and i ma finished with its development.

And now i have to add functionality to add an entry to system explorer context menu (right click menu) to have my application icon and menu entry on it. as user select multiple files and right click on them, my application icon and menu entry will appear over then and by selecting that, i need to select all that files to my main application for encryption process.

I have searched over Google and found some solutions but its only show some registry key to enter, but there is nothing to show how to handle all event, how to add icon to menu. i have also found one article over code project but its written in c++, and i need in c#.

So can any body has any idea or example using c#, or any wrapper or helper class to register/unregistered context menu entry for my application etc.

I want to do same as winzip or winrar or notepad++ application add their entry to system context menu with the icon on menu as well.

Tejas Vaishnav
Find me on Facebook | Blog

Re: How to write Context menu helper class

Eddy Vluggen26-Aug-14 22:27

Eddy Vluggen

26-Aug-14 22:27

You are looking to write an Explorer/Shell extension.

Bastard Programmer from Hell Suspicious | :suss:

If you can't read my code, try converting it here[^]

Re: How to write Context menu helper class

Rob Philpott26-Aug-14 22:38

Rob Philpott

26-Aug-14 22:38

Sounds tricky in .NET.

Regards,
Rob Philpott.

Re: How to write Context menu helper class

Tejas Vaishnav26-Aug-14 23:00

Tejas Vaishnav

26-Aug-14 23:00

Yes, I am looking for that.

Tejas Vaishnav
Find me on Facebook | Blog

Re: How to write Context menu helper class

Eddy Vluggen27-Aug-14 0:28

Eddy Vluggen

27-Aug-14 0:28

How to Write Windows Shell Extension with .NET Languages[^]

Bastard Programmer from Hell Suspicious | :suss:

If you can't read my code, try converting it here[^]

Re: How to write Context menu helper class

Tejas Vaishnav27-Aug-14 1:26

Tejas Vaishnav

27-Aug-14 1:26

Thanks Eddy Vluggen.

I have also got one more article, as well as Helper library thanks to Dave Kerr.. Smile | :)

.NET Shell Extensions - Shell Context Menus[^]

But thanks for your response.

Tejas Vaishnav
Find me on Facebook | Blog

Re: How to write Context menu helper class

Eddy Vluggen27-Aug-14 8:12

Eddy Vluggen

27-Aug-14 8:12

You're welcome Smile | :)

c# XML nodelist to datagrid

jdpiper6526-Aug-14 11:44

jdpiper65

26-Aug-14 11:44

I have an small issue of adding an XML nodelist to a datagrid. It is as follows:
I have a few code blocks that read in the nodelist from an XML file that I was able to find in several forums starting with this one which I have tweaked to suit. I am grabbing the proper nodelist (ServiceHistory) and all works well unti I try and add custom columns etc.

public static DataTable ConvertXmlNodeListToDataTable(XmlNodeList xnl)
{
DataTable dt = new DataTable();
string strOpCode, strDescription; //set up error code vars
//String OpCode;
//String Description;

int TempColumn = 0;

foreach (XmlNode node in xnl.Item(0).ChildNodes)
{
DataColumn dc = new DataColumn(node.Name, System.Type.GetType("System.String"));
if (node.Name == "Operation") //Need to get the OpCode and Descriptions out
{
CodesDesc(node.InnerText, out strOpCode, out strDescription);

dt.Columns.Add("OpCode");
dt.Columns.Add("Description");
}
TempColumn++;

if (dt.Columns.Contains(node.Name))
{
dt.Columns.Add(dc.ColumnName = dc.ColumnName + TempColumn.ToString());
}
else
{
dt.Columns.Add(dc);
}
}
int ColumnsCount = dt.Columns.Count;
for (int i = 0; i < xnl.Count; i++)
{
DataRow dr = dt.NewRow();

for (int j = 0; j < ColumnsCount; j++)
{
dr[j] = xnl.Item(i).ChildNodes[j].InnerText;
}
dt.Rows.Add(dr);
}
return dt;
}

The CodeDesc void is used to break strings out one of the nodes(<operation>) and into 2 new data columns. I am having trouble figuring out just how to go about adding the columns I want(the OpCode and Description columns) and get the strings from the Operations.Innertext into those.

public static void CodesDesc(string OpsText, out string strOpCode, out string strDescription)
{
int Lpos = OpsText.IndexOf("*");
int Rpos = OpsText.LastIndexOf("*") +1;

strOpCode = OpsText.Substring(0, Lpos);
strDescription = OpsText.Substring(Rpos);
}

The Sample XML is as follows:

XML

<?xml version="1.0" encoding="UTF-8"?>
<api:reply xmlns:api="http://www.site.com/api" version="1.0">
  <Session>
    <Reply type="Connection">
      <ErrorMessage />
      <ErrorCode>0</ErrorCode>
    </Reply>
    <Reply group="T1G1" object="ServiceHistory" type="Get">
      <ServiceHistory>
        <RecordID>XF301274*9929</RecordID>
        <SWR>661</SWR>
        <Operation>BSRS*IBN****REPAIR RIGHT SIDE DAMAGE</Operation>
        <PartsAmount>31.20</PartsAmount>
        <LaborAmount>543.00</LaborAmount>
      </ServiceHistory>
      <ServiceHistory>
        <RecordID>XF301274*9929</RecordID>
        <SWR>661</SWR>
        <Operation>RP*IBN****REFINISH &amp; PAINT DAMAGED AREA</Operation>
        <PartsAmount>0.00</PartsAmount>
        <LaborAmount>351.00</LaborAmount>
      </ServiceHistory>
      <ServiceHistory>
        <RecordID>XF301274*9929</RecordID>
        <SWR>661</SWR>
        <Operation>PM*IPM****PAINT &amp; MATERIAL</Operation>
        <PartsAmount>0.00</PartsAmount>
        <LaborAmount>198.90</LaborAmount>
      </ServiceHistory>
      <ErrorMessage />
      <ErrorCode>0</ErrorCode>
    </Reply>
  </Session>
</api:reply>

Any help is greatly appreciated...

Re: c# XML nodelist to datagrid

Bernhard Hiller26-Aug-14 20:55

Bernhard Hiller

26-Aug-14 20:55

I cannot really follow your description. What do you want to achieve?
Do you talk about splitting an entry like

HTML

<Operation>BSRS*IBN****REPAIR RIGHT SIDE DAMAGE</Operation>

into several fields, with * being the saparator?
But then it is (at least) three field, not two!

Re: c# XML nodelist to datagrid

jdpiper6527-Aug-14 4:58

jdpiper65

27-Aug-14 4:58

I apologize. Let me try an explain further. I need to split the Operation Element innertext which is being done. The issue is trying to get that text into the datatable row properly. I have modified the function some to add columns as I know what those are going to be. It is the childnode values that change and I need to take Operation childnode and change the loop to add the OpCode and Description strings rather than the Operation childnode innertext.

        public static DataTable ConvertXmlNodeListToDataTable(XmlNodeList xnl)
        {
            DataTable dt = new DataTable();
            string strOpCode, strDescription; //set code vars
            dt.Columns.Add("RecordID");
            dt.Columns.Add("SWR");
            dt.Columns.Add("OpCode");
            dt.Columns.Add("Description");
            dt.Columns.Add("PartsAmount");
            dt.Columns.Add("LaborAmount");

            int ColumnsCount = dt.Columns.Count;
            for (int i = 0; i < xnl.Count; i++)
            {
                DataRow dr = dt.NewRow();

                for (int j = 0; j < ColumnsCount; j++)
                {
                    if (xnl.Item(i).ChildNodes[j].Name == "Operation")
                    {
                        CodesDesc(xnl.Item(i).ChildNodes[j].InnerText, out strOpCode, out strDescription);
                        dr[j] = strOpCode.ToString();
                        dr[j+1] = strDescription.ToString();
                        j++;
                    }
                    else
                    {
                        dr[j] = xnl.Item(i).ChildNodes[j].InnerText;
                    }
                }
                dt.Rows.Add(dr);
            }
            return dt;
        }        
Does this help clear things up? I amnot able to insert the text into the datarow properly during the  for loop which is where my headaches are coming from..

modified 27-Aug-14 14:44pm.

scraping C#

jojoba2026-Aug-14 10:23

jojoba20

26-Aug-14 10:23

I would like to know how the HTML source of ajax based sites can be read using HttpWebRequest / HttpWebResponse (That is reading the contents of a website at server side). The problem that I'm facing is that I'm unable to read parts of the webpage which uses Ajax or stuffs like UpdatePanel.

http://stackoverflow.com/questions/20097175/how-to-web-scrape-ajax-update-panel-with-c[^]

modified 26-Aug-14 16:33pm.

Re: scraping C#

Dave Kreskowiak26-Aug-14 12:13

Dave Kreskowiak

26-Aug-14 12:13

You can't.

The problem is that the remaining HTML is generated by javascript code at "run-time" of the HTML page, using data retrieved over separate HTTP requests. Unless you're code can execute the javascript itself and figure out what it's outputting, you'll never get this to work.

I don't know of any implementations that can scrape this.

A guide to posting questions on CodeProject

Click this: Asking questions is a skill.
Seriously, do it.

Dave Kreskowiak

Re: scraping C#

jojoba2027-Aug-14 6:59

jojoba20

27-Aug-14 6:59

Thanks all
I have done that

Object Reference Error

Member 914293626-Aug-14 7:29

Member 9142936

26-Aug-14 7:29

Hi All,

Can anyone help, I am getting an object reference error in my code. All I am doing is adding two tables to one table, the tables that are being added are Genealogy Table and Relationship Table to Details Table.

The error is below:

An object reference is required for the non-static field, method, or property 'MvcGenealogy.Models.GRHolding.GetDetailID(System.Web.HttpContextBase)'

The error is part of a holding model, the code that is causing the error is below:

public static GRHolding GetDetail(HttpContextBase context)
        {
            var detail = new GRHolding();
            detail.GRHoldingID = GRHolding.GetDetailID(context);
            return detail;
        }

It references the GetDetailID, the code is below and come from the same Model.GRHolding:

public string GetDetailID(HttpContextBase context)
        {
            if (context.Session[DetailsSessionKey] == null)
            {
                if (!string.IsNullOrWhiteSpace(context.User.Identity.Name))
                {
                    context.Session[DetailsSessionKey] = context.User.Identity.Name;
                }
                else
                {
                // Generate a new random GUID using System.Guid class
                    Guid tempDetailsID = Guid.NewGuid();
                    // Send tempDetailsID back to client as a cookie
                    context.Session[DetailsSessionKey] = tempDetailsID.ToString();
                }
            }
            return context.Session[DetailsSessionKey].ToString();
        }

I do have a Session in my Model call DetailsSessionKey which is a string and identifies with the DetailsID. The code that declares this is here:

public const string DetailsSessionKey = "DetailsID";

I think the problem is in my session because the error is with this line of code "detail.GRHoldingID = GRHolding.GetDetailID(context);", which under the GetDetail in my GRHolding.cs model. It is not converting it to a string properly. I think it is something minor in the session, can anyone help? All I am to doing is associating two tables, (Genealogy table and Relationship table), with one table, (Details table).

Re: Object Reference Error

OriginalGriff26-Aug-14 8:17

OriginalGriff

26-Aug-14 8:17

Best guess? Check the GetDetail method parameter: I'd start by looking to see if context is null in the debugger.

You looking for sympathy?
You'll find it in the dictionary, between sympathomimetic and sympatric
(Page 1788, if it helps)

Re: Object Reference Error

Member 914293626-Aug-14 19:17

Member 9142936

26-Aug-14 19:17

Hi OriginalGriff,

I did check out the GetDetail, that was okay, I changed the GetDetailID to static and now I am getting a another compiler error in the return.

The error is as follows Cannot implicitly convert type 'string' to 'int'".

Now I have the DetailID declared as a string in GRHolding.cs Model, and my in my sql table, Details, DetailID is a int. The code causing the error is as follows:

return context.Session[DetailsSessionKey].ToString();

My declaration value is

public const string DetailsSessionKey = "DetailsID";

Changing the GetDetailID to "static" seems to have solved the original compiler error and created another. It seems to be an error with the conversion of a string to an int on a return value.

Do you have any ideas, it would be appreciated.

Regards

Anthony

Re: Object Reference Error

Richard Deeming26-Aug-14 9:21

Richard Deeming

26-Aug-14 9:21

Either your GetDetailID method needs to be static, or the GetDetailID method call needs to be made against an instance of the GRHolding class.

So, either:

public static string GetDetailID(HttpContextBase context)
{
    ...
}

or:

var detail = new GRHolding();
detail.GRHoldingID = detail.GetDetailID(context);
return detail;

"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer

Re: Object Reference Error

Member 914293626-Aug-14 19:02

Member 9142936

26-Aug-14 19:02

Hi Richard,

I Changed the to Static GetDetailID, I am now getting a compiler error.

The error is "Cannot implicitly convert type 'string' to 'int'"

Now I have the DetailID declared as a string in GRHolding.cs Model, and my in my sql table, Details, DetailID is a int. The code causing the error is as follows:

return context.Session[DetailsSessionKey].ToString();

My declaration value is

public const string DetailsSessionKey = "DetailsID";

I thank you very much for the help with original compiler error, that seems to solve compiler error, but now I have another problem with the conversion of a string to an int on a return value.

Do you have any ideas, it would be appreciated.

Regards

Anthony

Re: Object Reference Error

Bernhard Hiller26-Aug-14 21:05

Bernhard Hiller

26-Aug-14 21:05

Ehm, that's actually beginner's stuff, isn't it?
Look:
detail.GRHoldingID = detail.GetDetailID(context);
assigns the return value of the GRHoldingID function to the GRHoldingID property.
From the code snippet you showed us, we can see that GRHoldingID returns a string.
From the error message, we can conclude that the GRHoldingID property is an integer.
Since we do not have more information about that class and its business rules, we cannot provide a "correct" solution safely.
You might change the GRHoldingID property to a string, or you might try to get an integer value from the string, i.e.

string strID = detail.GetDetailID(context);
int id;
if (int.TryParse(strID, out id))
{
    detail.GRHoldingID = id;
}
else
{
    // how do you want to handle this error case?
}

Speech recogination of specific language

frech8726-Aug-14 1:16

frech87

26-Aug-14 1:16

Hi. I want to develop an application that recognizes the language. This app will listen to (capture sound from the microphone) the speech, and if it detects a specific language (Armenian), the application will show the message "The Armenian language is found." The app will work with only one language, and only discover it.
How realize it? How to teach this application to detect the language?

Re: Speech recogination of specific language

Pete O'Hanlon26-Aug-14 1:44

Pete O'Hanlon

26-Aug-14 1:44

With the state of speech recognition as it stands right now, this is next to impossible. There are too many things that affect the quality of speech recognition that throwing in another uncertainty would not help. Suppose that I was to use the Geordie phrase (it's an English regional dialect) of "Why aaz a ganning hyem". What language would it identify? I still speak English, but in this case, it would determine that I'm speaking Danish which has a similar phrase.

Re: Speech recogination of specific language

frech8726-Aug-14 1:48

frech87

26-Aug-14 1:48