C# Discussion Boards - CodeProject

J. Dunlap30-May-07 1:16

30-May-07 1:16

Is this in a browser scenario, or is this in a desktop scenario? With ASP.NET, the best way to upload a file is with the FileUpload control. In a desktop situation, use WebRequest.Create() to create a web request. Set the ContentType property on the request, and then get a response for it:

WebRequest request= WebRequest.Create(url);
request.ContentType="multipart/form-data";
request.Method="POST";
Stream stream=request.GetRequestStream();
//write to the stream...
WebResponse response= request.GetResponse();
//check the response to see if the file was uploaded successfully

--Justin
Microsoft MVP, C#

C# / Web / VG.net / MyXaml expert currently looking for (telecommute) contract work![^]

DATA GRID sorting problem.

kumar.bs30-May-07 0:14

kumar.bs

30-May-07 0:14

My requirement is, i added 50 empty rows to the Data grid. One of the columns of the datagrid is of ComboBoxColumnStyle. Now after filling data into just two rows (remember i have 50 empty rows), when i click on column header of ComboBoxColumnStyle columns it is sorting the total 50 rows, but i want to ignore the empty rows (other 48 rows). Because if i don't ignore the empty rows and sort the rows with data are being moved to end of the grid, leaving all above rows empty.

Any ideas, how to sort rows only with data?

Thanks
kumar

Re: DATA GRID sorting problem.

Manoj Kumar Rai30-May-07 1:12

Manoj Kumar Rai

30-May-07 1:12

Hi,

You can set the "SortMode" properties for the column as "Programatic". In this case you can control the time when you want the sorting to take place.

Manoj
Never Gives up

Re: DATA GRID sorting problem.

Meenakshi Sundaram.k30-May-07 2:06

Meenakshi Sundaram.k

30-May-07 2:06

its simple write one for loop for geeting all the data from datagrid and check within for loop the data is available or not .if the data is available sort the data.

Re: DATA GRID sorting problem.

kumar.bs30-May-07 6:16

kumar.bs

30-May-07 6:16

In which event should i write this code?

HashTable sort order

Blumen29-May-07 23:56

Blumen

29-May-07 23:56

Hi,

I declare a HashTable as a class variable, and assign values to it inside a private fuction. I try to access the HashTable in another function, but the order of the Keys added is lost.

If I have added keys in the order 1, 2 and 3 (with its Value), when I access the HashTable the order is lost, it may be in 2-3-1 order or some other order.

Usually hashtable retains the order, could anyone point what going wrong here.

Regards,
Blumen

Re: HashTable sort order

Martin#30-May-07 0:07

Martin#

30-May-07 0:07

Hello,

No Hashtable is not holding the order.
An ArrayList does.

All the best,

Martin

Re: HashTable sort order

CPallini30-May-07 0:15

CPallini

30-May-07 0:15

As pointed out already by Martin#, the key order of insertion is not retained, for instance, see the sample code given in
http://msdn2.microsoft.com/en-us/library/system.collections.hashtable.add.aspx[^]
Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

Re: HashTable sort order

sujithkumarsl30-May-07 1:25

sujithkumarsl

30-May-07 1:25

you can use sorted list, if you want that in an order

My small attempt...

Re: HashTable sort order

leppie30-May-07 4:51

leppie

30-May-07 4:51

Hashtable never orders the keys. You can NEVER rely on that. Use a SortedList instead.

xacc.ide-0.2.0.57 - now with C# 2.0 parser and seamless VS2005 solution support!

failed to load view state

tauras8129-May-07 23:49

tauras81

29-May-07 23:49

hi,
i hava following error :

Failed to load viewstate. The control tree into which viewstate is being loaded must match the control tree that was used to save viewstate during the previous request. For example, when adding controls dynamically, the controls added during a post-back must match the type and position of the controls added during the initial request.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Web.HttpException: Failed to load viewstate. The control tree into which viewstate is being loaded must match the control tree that was used to save viewstate during the previous request. For example, when adding controls dynamically, the controls added during a post-back must match the type and position of the controls added during the initial request.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:

[HttpException (0x80004005): Failed to load viewstate. The control tree into which viewstate is being loaded must match the control tree that was used to save viewstate during the previous request. For example, when adding controls dynamically, the controls added during a post-back must match the type and position of the controls added during the initial request.]
System.Web.UI.Control.LoadViewStateRecursive(Object savedState) +483
System.Web.UI.Control.LoadChildViewStateByIndex(ArrayList childState) +195
System.Web.UI.Control.LoadViewStateRecursive(Object savedState) +424
System.Web.UI.Control.LoadChildViewStateByIndex(ArrayList childState) +195
System.Web.UI.Control.LoadViewStateRecursive(Object savedState) +424
System.Web.UI.Control.LoadChildViewStateByIndex(ArrayList childState) +195
System.Web.UI.Control.LoadViewStateRecursive(Object savedState) +424
System.Web.UI.Control.LoadChildViewStateByIndex(ArrayList childState) +195
System.Web.UI.Control.LoadViewStateRecursive(Object savedState) +424
System.Web.UI.Control.LoadChildViewStateByIndex(ArrayList childState) +195
System.Web.UI.Control.LoadViewStateRecursive(Object savedState) +424
System.Web.UI.Control.LoadChildViewStateByIndex(ArrayList childState) +195
System.Web.UI.Control.LoadViewStateRecursive(Object savedState) +424
System.Web.UI.Page.LoadAllState() +559
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2237

--------------------------------------------------------------------------------
Version Information: Microsoft .NET Framework Version:2.0.50727.42; ASP.NET Version:2.0.50727.210

can any body tell the solution

Re: failed to load view state

leppie30-May-07 4:53

leppie

30-May-07 4:53

You need to reset the page's viewstate after adding the controls dynamically, then it will recreate it, and all should be fine.

xacc.ide-0.2.0.57 - now with C# 2.0 parser and seamless VS2005 solution support!

ASCII LpSTR?

Russell Jones29-May-07 23:41

Russell Jones

29-May-07 23:41

I'm trying to make a call into a compression dll

This is declared like this in VB6:

<br />
Private Declare Function compress Lib "compression.dll" (dest As Any, destLen As Any, src As Any, ByVal srcLen As Long) As Long<br />
Private Declare Function uncompress Lib "compression.dll" (dest As Any, destLen As Any, src As Any, ByVal srcLen As Long) As Long

I've added the following to a c# class

<br />
   [DllImport("compression.dll")]<br />
      public static extern int uncompress(ref byte[] inputBuffer, ref int inputLength, ref byte[] outputBuffer, int OutputLength);<br />
      [DllImport("compression.dll")]<br />
      public static extern int compress( [MarshalAs(UnmanagedType.LPStr)]  StringBuilder inputBuffer,ref  int inputLength,  [MarshalAs(UnmanagedType.LPStr)]  StringBuilder outputBuffer, int OutputLength);

If i call the compress method using c# and decompress using c# this works fine. The problem arises when i try to compress in c# and decompress in vb6 or vice versa. Is there a back compatability mode for string functions like this?

Thanks in advance

Russell

Re: ASCII LpSTR?

Dave Herren30-May-07 1:21

Dave Herren

30-May-07 1:21

Russell Jones wrote:
The problem arises

What is the problem... an error message, invalid data, what? Please provide a little detail.

topcoderjax - Remember, Google is your friend.

Try this Custom Google Code Search

Sub-classing

Shivaprasad D Atthigode29-May-07 23:27

Shivaprasad D Atthigode

29-May-07 23:27

what is sub-classing in C#, and hw to achive that.

Re: Sub-classing

MarkB77729-May-07 23:56

MarkB777

29-May-07 23:56

//a.k.a inheritance.

//so for example...

public class ClassOne : ClassBase
{
//this class is a subclass of ClassBase
}

public class ClassTwo : ClassBase
{
//this class is a subclass of ClassBase
}

public class ClassBase
{
protected int X = 5; // The two subclasses can access this variable as its been "inherited"
}

rich textbox

treah29-May-07 23:18

treah

29-May-07 23:18

i want to select the text written in the rich text box

Re: rich textbox

JoeSharp29-May-07 23:26

JoeSharp

29-May-07 23:26

hi
myrichtextbox.SelectAll():

regards

Re: rich textbox

NassosReyzidis29-May-07 23:27

NassosReyzidis

29-May-07 23:27

Hello treah,
with the RTFControl1.SelectionStart and RTFControl1.SelectionLength will give you the start and length (int) so you can get the text!
Hope that helps
Nassos

GanDad

Populate combobox

matjame29-May-07 23:00

matjame

29-May-07 23:00

Hi all.

Im trying to load data into a combo box during form load.The items Im trying to load are from a database.

Now here is my little code that gives me errors.

protected void Page_Load(object sender, EventArgs e)
{
con.ConnectionString = str;
String str1 = "Select * from Filter";
con.Open();
cm.Connection = con;
dtr = cm.ExecuteReader();
if (dtr.Read())
{
// Load FilterByKeys onto the combo box
cboExtension.Text = (dtr["FilterKey"]).ToString();<<*****Problem****
lblMessage.Text = "Good. All the values are loaded";

Thanx.

kagiso

Re: Populate combobox

Christian Graus29-May-07 23:06

Christian Graus

29-May-07 23:06

What a mess

matjame wrote:
con.ConnectionString = str;

what is str, and why is a member variable named so badly ?

matjame wrote:
String str1 = "Select * from Filter";

You never use this anywhere, so it's irrelevant to the rest of the code.

What is con, cm and dtr ? Why do you have badly named member variables like this, that probably could be local, and are not named in a way that means anything ?

matjame wrote:
cboExtension.Text = (dtr["FilterKey"]).ToString();<<*****Problem****

What's the problem ? Does it not compile ? Does it blow up ? What's the error message ?

This is also not going to do more than add one value into the combo box. That's what the Text property will do. To add items, make a collection the datasource, and if it's not a collection of strings, set the DisplayMember property.

All of this looks to me like you're making it up as you go and hoping it will work. Intellisense is no substitute for reading MSDN or buying a good book as a reference.

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog
"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

Re: Populate combobox

matjame29-May-07 23:21

matjame

29-May-07 23:21

Im not a c# code, so Im learning.

dtr is a datareader.
cm is a command
cn is a connection Sigh | :sigh:

kagiso

Re: Populate combobox

sujithkumarsl29-May-07 23:15

sujithkumarsl

29-May-07 23:15

DataTable status = new DataTable();
status = ExecuteNonQuery_SP("Select * from Filter");//getting the value
cmbStatus.DataSource =status ;
cmbStatus.DisplayMember = "Status_Name";
cmbStatus.ValueMember = "Status_Id";

give the displaymember and valuemember to the combobox'x object
here cmbStatus is the combobox

My small attempt...

Re: Populate combobox

J4amieC29-May-07 23:42

J4amieC

29-May-07 23:42

sujithkumarsl wrote:
status = ExecuteNonQuery_SP("Select * from Filter");//getting the value
cmbStatus.DataSource =status ;

---

How to get answers to your questions[^]

Re: Populate combobox

sujithkumarsl29-May-07 23:58

sujithkumarsl

29-May-07 23:58

status = ExecuteNonQuery_SP("Select * from Filter");//getting the value
cmbStatus.DataSource =status ;

actually ExecuteNonQuery_SP("Select * from Filter"); is a method which takes quaery as parameter and returns the datatable.
i used this code in my proj and its working

My small attempt...

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.