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XPathNavigator object has few methods to Navigate through the nodes of the XML document. You can make some slight changes to your code by using XPathDocument object and try something like this
Dim Doc As XPathDocument = New XPathDocument(path)<br />
Dim Navigator As XPathNavigator<br />
Navigator = Doc.CreateNavigator()<br />
Dim Iterator As XPathNodeIterator = Navigator.Select(Node)<br />
While Iterator.MoveNext()<br />
'your code here<br />
End While
XPathNodeIterator object has some more methods to access the child Nodes and Sub-Nodes within it.....
referred Microsoft Book - XML Webservices and Server Components.
Regards
- J O H N -
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private void SetConfigSettings()
{
string path = Server.MapPath("Web.config");
string newConnectionString = @"roles="+DropDownList1.SelectedValue+"";
XmlDocument xDoc = new XmlDocument();
xDoc.Load(path);
XmlNodeList nodeList = xDoc.SelectNodes("/system.web/location/system.web/authorization");
XmlNodeList nodeAppSettings = nodeList[0].ChildNodes;
XmlAttributeCollection xmlAttCollection = nodeAppSettings[0].Attributes;
//xmlAttCollection[0].InnerXml = txtKey.Text; // for key attribute
xmlAttCollection[0].InnerXml = newConnectionString; // for value attribute
xDoc.Save(path); // saves the web.config file
I gave the coode like that .But it willnot work.Plz help me.I want to change the roles in the allow tag that present in the subnode of authorization.How is it possible through the above code .What is the mistake.Thanks
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i have some data , which is commig from the previous page .in the current page , i am fetching it using the query string at form load.
after clicking the close button of my aspx page , i am redirecting the user to some other page.
i am currently in the source file , where after clicking the close button , i am navigating the user , now the question is , how can i sent the data to that page , which was coming from the previous one.
i am writing there only
location.hef = 'pe.aspx';
how should i add the data , along with the page name.
Soniagupta1@yahoo.co.in
Yahoo Messenger Id = soniagupta1
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Hi Sonia
You can use session to bypass the value
in previous page
session("test") = "123"
in current page (onload)
textbox1.text=session("test")
If, it is on the opener you can use javascript:
window.opener.Form1("Your_Field_Name").value="Your Value"
Hope it is usefull
Regards,
Riza Azmi
Simple thing should be simple, complex thing should be possible
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form1 is the name of aspx page?
Your_Field_Name is the variable with the page name , in wich i am passing the data,
i meant
<a href = "pre.aspx?Your_Field_Name=10"
is this right?
Soniagupta1@yahoo.co.in
Yahoo Messenger Id = soniagupta1
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Hi Sonia.
It is use when you use a separate page.
Just use session if it is not using separate page.
Separate page is someknid like:
There is page A:
window.open("B.aspx")
And in page B.
you can use window.opener.Form1(The_Field_inPage_A.ASPX).value="Something"
window.close
Regards,
Riza Azmi
Simple thing should be simple, complex thing should be possible
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Sonia Gupta wrote: after clicking the close button of my aspx page , i am redirecting the user to some other page
Are you trying to redirect when browser window is closed or a separate close button on your web form ?
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former case.
Soniagupta1@yahoo.co.in
Yahoo Messenger Id = soniagupta1
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You can pass as query string. But is it redirecting when browser close is clicked ?
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yes it is rediecting.
problem is with redirecting , i have to pass the data,which is comming from the previous page.
how should i get that data in the source file.
i am not using the session variables.
Soniagupta1@yahoo.co.in
Yahoo Messenger Id = soniagupta1
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Sonia Gupta wrote: how should i get that data in the source file.
Declare a public variable in you code behind, and set the values to be passed in this variable. Use the variable in scriptlets in javascript like
var JSVariable = <% =PublicServerVariable > . You can redirect to the URL with this value
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Thank You Navaneeth
Soniagupta1@yahoo.co.in
Yahoo Messenger Id = soniagupta1
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i am designing an application in ASP.Net using C# in Visual studio2005. while making crystal reports, my requirement is that when user enter any value(e.g, year) in the textBox and click the button the values according to user requiredment are displayed in report. but to load report i am writing code in "crystalReportViewer1_Load" and in query i want to use the value of textBox which is present on previous page.
i have write the code as:
public static string s1 = textBox1.Text;
public static string s2 = textBox1.Text;
and in "crystalReportViewer1_Load" i hav write
string s3 = rescue15.reports.s1;
string s4 = rescue15.reports.s2;
but the following error comes
Error 7 An object reference is required for the nonstatic field, method, or property 'rescue15.reports.textBox1'
can anyone guide me plz
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Hi mavii
what if like this?
session("s1") = textBox1.Text;
session("s2") = textBox1.Text;
and in "crystalReportViewer1_Load"
string s3 = session("s1");
string s4 = session("s2");
Is it solving the problem? (I am a new with CR also).
Regards,
Riza Azmi
Simple thing should be simple, complex thing should be possible
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can u plz explain about how u have used session, i mean if i simply write like this,
session("s1") = textBox1.Text;
session("s2") = textBox1.Text;
the following errors come:
Error 1: Class, struct, or interface method must have a return type
Error 2 Type expected
Error 3 Invalid token ';' in class, struct, or interface member declaration
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You can't, because the other page just doesn't exist anymore. You can do one of several things -
1 - store the value in the session ( as someone showed you )
2 - put the value on the URL when you navigate to the second page ( the advantage of this is that your new page becomes bookmarkable )
Christian Graus - Microsoft MVP - C++
"also I don't think "TranslateOneToTwoBillion OneHundredAndFortySevenMillion FourHundredAndEightyThreeThousand SixHundredAndFortySeven()" is a very good choice for a function name" - SpacixOne ( offering help to someone who really needed it ) ( spaces added for the benefit of people running at < 1280x1024 )
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can u plz explain your following sugesstion, i am not exactly getting what to do
" put the value on the URL when you navigate to the second page ( the advantage of this is that your new page becomes bookmarkable )"
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If you had a list of songs, for example, and you were going to a page that printed the lyrics, then if each song had an Id, each song title could be rendered as a link, but the links could be
lyrics.aspx?songId=1
lyrics.aspx?songId=2
lyrics.aspx?songId=3
and so on. Then lyrics.aspx could read the songId from the query string and use it in a SQL query to retrieve the correct lyrics and render them.
Christian Graus - Microsoft MVP - C++
"also I don't think "TranslateOneToTwoBillion OneHundredAndFortySevenMillion FourHundredAndEightyThreeThousand SixHundredAndFortySeven()" is a very good choice for a function name" - SpacixOne ( offering help to someone who really needed it ) ( spaces added for the benefit of people running at < 1280x1024 )
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mavii wrote: put the value on the URL when you navigate to the second page ( the advantage of this is that your new page becomes bookmarkable
He meant pass the values through URL as query string. So your URL will look like yourpage.aspx?TextBox1Value=somevalue&TextBox2Value=somevalue. This can be taken in the page using Request.QueryString["TextBox1Value"]. And these type of URL's are bookmarkable, ie if you add this to bookmarks, it can be reloaded after some time. But if you use session and bookmarked the page, you can't reload it because session will be timed out.
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Using query string is not safe regarding to security, whereas using session you can pass the value withouth user "see" it.
Regards,
Riza Azmi
Simple thing should be simple, complex thing should be possible
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Riza Azmi wrote: Using query string is not safe regarding to security,
Choosing the method is always depends on the requirement. If security is not a main concern, query strings are the best, and in that case usage of sessions are not advised. Moreover as Christian told, the page will be book markable. But if security is the main concern, still you can use query string but after encrypting the value.
I always prefer query strings, since it won't keep anything in the server memory as session does.
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session is hide the data. that is what I called "secure". no matter encrypted or no, user still cannot deal with the value directly.
session can store any datatype including datasource.
thanks for sharing
Regards,
Riza Azmi
Simple thing should be simple, complex thing should be possible
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Tamper the Querystring Parameters. It's safe. Session Objects should be used only when you need a value through out the session accross the pages. When it's just a input parameter to generate a report which is not going to be the same every time you fetch the data then Query string is the best way here.
Regards
- J O H N -
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Hello friends,
Here is another error which I am getting in asp.net
My task is to change the color of an image in grayscale or sepia and after that save that image to the server.
I have completed the half part of that task but in the remaining half i am getting an error.
The error is "System.ArgumentException: Invalid parameter used."
Now let me explain what i am doing is Using bitmap for changing image color and after that saving that bitmap on server at that point i am getting this error...
i am writing some of that code here:::
Public Function ConvertToGrayscale(ByVal source As Bitmap) As Bitmap
Dim bm As New Bitmap(source.Width, source.Height)
Dim x
Dim y
For y = 0 To bm.Height - 1
For x = 0 To bm.Width - 1
Dim c As Color = source.GetPixel(x, y)
Dim luma As Integer = CInt(c.R * 0.3 + c.G * 0.59 + c.B * 0.11)
bm.SetPixel(x, y, Color.FromArgb(luma, luma, luma))
Next
Next
Return bm
End Function
Public Function ConvertToSepia(ByVal source As Bitmap) As Bitmap
Dim bm As New Bitmap(source.Width, source.Height)
Dim R, G, B As Integer
Dim x
Dim y
For y = 0 To bm.Height - 1
For x = 0 To bm.Width - 1
Dim c As Color = source.GetPixel(x, y)
R = CInt(c.R * 0.393 + c.G * 0.769 + c.B * 0.189)
If R > 255 Then R = 255
G = CInt(c.R * 0.349 + c.G * 0.686 + c.B * 0.168)
If G > 255 Then G = 255
B = CInt(c.R * 0.272 + c.G * 0.534 + c.B * 0.131)
If B > 255 Then B = 255
bm.SetPixel(x, y, Color.FromArgb(R, G, B))
Next
Next
Return bm
End Function
Private Function uploadFile(ByVal oFile As System.Web.UI.HtmlControls.HtmlInputFile, ByVal cbochoose As DropDownList, ByVal txtITitle As TextBox, ByVal ControlNo As Long, ByVal CoverType As String)
Dim obm As Bitmap, obm1 As Bitmap, obm2 As Bitmap
obm = New Bitmap(oFile.Value)
obm1 = ConvertToGrayscale(obm)
obm1.Save(strFilePath & strFName_B)
obm2 = ConvertToSepia(obm)
obm2.Save(strFilePath & strFName_S)
obm.Dispose() : obm1.Dispose() : obm2.Dispose()
oFile.PostedFile.SaveAs(strFilePath & strFName & strFExt)
End Function
I don't know exactly where i am getting error... at which step...
Now tell me what will be the reason of getting that error.......
I am waiting for your reply....
please try it first and after that give the answer.
Thanks in advance................
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Read my image processing articles, this is the worst way you could create greyscale/sepia images.
Which line blows up ? Did you go through the debugger to check, for example, if the paths you're generating are valid ?
Christian Graus - Microsoft MVP - C++
"also I don't think "TranslateOneToTwoBillion OneHundredAndFortySevenMillion FourHundredAndEightyThreeThousand SixHundredAndFortySeven()" is a very good choice for a function name" - SpacixOne ( offering help to someone who really needed it ) ( spaces added for the benefit of people running at < 1280x1024 )
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