move rows up and down in datagrid - C# Discussion Boards

You may want to check out inno setup as I found it easier to use.

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*****************
"We need to apply 21st-century information technology to the health care field. We need to have our medical records put on the I.T." —GW

Hi all,
I am overridding WndProc method in C# for RichTextBox to handle the paste functionality.If i inherit TextBox, the message id 0x0302 gives WM_PASTE handler, but if i use RichTextBox it is not working. Is there any specific WM_PASTE message id for rich textbox. How can i know various MessageIds for RichTextBox.

Hi what I want to know if it is possible to bind a property of a property to for example a listbox. When I try it comes up with a lot of strange errors. First it tried to show the ValueMember and then it used the qualified name.

The code:

MyListBox.DataSource = MyObject<br />
MyListBox.ValueMember = "ID" //Property of MyObject<br />
MyListBox.DisplayMember = "SubObject.Name" //Property of SubObject<br />

DisplayMember will take the SQL field name. I think you cannot assign field name "SubObject.Name" like this.

Anil Joshi

This has nothing to do with SQL. The data is coming from a Xml-File. But that is not the point. What MyListBox.ValueMember = "ID" does is bind it with a Property in the already bound MyObject. So the question remains is it possible to use a property of a property as a DisplayMember?

/Johan

Hi everybuddy,
I'm required to submit project on Mail Server after approx 2 months using .NET technologies (ASP.NET or C#.NET) but I dont know wat is a background functionality of the mail server Confused | :confused:

Please tell me how could i start the project and form which site(s)/forum(s) i can get the information about the functionality of a Mail Server

HELP ME Pleeeease, Sigh | :sigh:

May This Help You
SMTP and POP3 Mail Server
[^]

MCAD

Hello,

I have a window application with a datagrid on it. (Data bound from a dataset). Each row has an order number (stoporder).
Now I want the user to be able to move the rows up and down with an up and down button(and automatically change the number).

I can do this ok, if I manually click the order number first. (Then my rows move up and down and the number alters.) But how can I do this in the code? If I sort on any other column, then the up/down goes wrong too.

<br />
private void btnRouteStopUp_Click(object sender, System.EventArgs e)<br />
{<br />
  DataRow             row;<br />
  int                 stopOrder;<br />
  DataRowCollection   rowCollection;<br />
  int inc;<br />
<br />
  try <br />
  {<br />
    row = GetRouteStopsRow ();<br />
    dtRouteStops.UnSelect(dtRouteStops.CurrentRowIndex);<br />
    inc=dtRouteStops.CurrentRowIndex;<br />
                <br />
    if (null != row) <br />
    {<br />
       stopOrder = Convert.ToInt32(row[FLD_STOPORDER]);<br />
       if (stopOrder > 1) <br />
       {<br />
          stopOrder -= 1;<br />
          row[IMS.FLD_STOPORDER] = 0;<br />
          rowCollection = m_dataSetRouteStops.Tables[TBL_ROUTESTOPS].Rows;<br />
          foreach (DataRow rowMove in rowCollection) <br />
          {<br />
            if (DataRowState.Deleted != rowMove.RowState) <br />
            {<br />
              if ((row != rowMove) && (Convert.ToInt32(rowMove[FLD_STOPORDER]) == stopOrder)) <br />
              {<br />
                rowMove[FLD_STOPORDER] = stopOrder + 1;<br />
                row[FLD_STOPORDER]     = stopOrder;<br />
                break;<br />
              }<br />
            }<br />
          }<br />
        }<br />
      }<br />
    }<br />
    dtRouteStops.Select(inc-1);<br />
  }<br />
  catch (System.IndexOutOfRangeException ex)<br />
  {}<br />
  catch (Exception exc) <br />
  {/*error message*/}<br />
}<br />
<br />
private void btnRouteStopDown_Click(object sender, System.EventArgs e)<br />
{<br />
  DataRow             row;<br />
  int                 stopOrder;<br />
  DataRowCollection   rowCollection;<br />
  int                 inc;<br />
<br />
  try <br />
  {<br />
    row = GetRouteStopsRow ();<br />
    dtRouteStops.UnSelect(dtRouteStops.CurrentRowIndex);<br />
    inc=dtRouteStops.CurrentRowIndex;<br />
    if (null != row) <br />
    {<br />
      stopOrder = Convert.ToInt32(row[FLD_STOPORDER]);<br />
      if (stopOrder < m_dataSetRouteStops.Tables[TBL_ROUTESTOPS].Rows.Count) <br />
      {<br />
        stopOrder += 1;<br />
        row[IMS.FLD_STOPORDER] = 0;<br />
        rowCollection = m_dataSetRouteStops.Tables[TBL_ROUTESTOPS].Rows;<br />
        foreach (DataRow rowMove in m_dataSetRouteStops.Tables[TBL_ROUTESTOPS].Rows) <br />
        {<br />
          if (DataRowState.Deleted != rowMove.RowState) <br />
          {<br />
            if ((row != rowMove) && (Convert.ToInt32(rowMove[FLD_STOPORDER]) == stopOrder)) <br />
            {<br />
              rowMove[FLD_STOPORDER] = stopOrder - 1;<br />
              row[FLD_STOPORDER] = stopOrder;<br />
            }<br />
          }<br />
        }<br />
      }<br />
    }<br />
    dtRouteStops.Select(inc+1);<br />
  }<br />
  catch (System.IndexOutOfRangeException ex)<br />
  {}<br />
  catch (Exception exc) <br />
  {/*error message*/}        <br />
}<br />

Any suggestion?
thx in advance,
kalliet

what I forgot to add :

dtRouteStops is the name of my datagrid
m_dataSetRouteStops is the name of my dataset

kalliet

in the load method, I added :

m_dataSetRouteStops.Tables[TBL_ROUTESTOPS].DefaultView.Sort = "stopOrder asc";

The column is now sorted from the start, which makes the up/down go OK.

Now I have a new problem : how do I set the grid on sorting not allowed? (so the user cannot sort on other columns)
I've tried the property :
dtRouteStops.AllowSorting = false;
but when the form appears I CAN sort on columns of the datagrid ????

any ideas?
thx in advance,
kalliet

hi i want to include dll for reading and writing data from parallel port in NT base windows.
now i have a dll for this perpose but it not include in c#.
plz tell me how to inculde dll. and if, for this perpose handler will create then how create that handler and how use the dll.
reply me soon
bye.

I have a public static function in a class named "PublicFunctions". I call this function in my MDI form's "MdiChildActivate" event. What the function do is, it takes current activeMdiChild as argument and set a public variable present in this activeMdiChild. All the child forms have this public variable "formCurrentMode", which i use to store form's current mode like "update","save","new" etc.

My problem is, in my public static function in class "PublicFunctions" i am getting an error that 'System.Windows.Forms.Form' does not contain a definition for 'FormCurrentMode'.

Please help me to solve this problem.
Thanks
Sheel

Sheel Gohe

I have a question which I am sure someone has had before me:

when implementing drag'n'drop for a treeview control I have no problem, except that when dragging over an area in the treeview control which is empty (lets say i have only three nodes, but the control is much higher than this), The drop operation is not allowed, only when dragging onto previous nodes. Why is that? Can I do something about it in an easy way?

thankful for help,
Bjørn

Hello,

i have read on msdn the documentation referring to DPAPI. i have also tried those examples and when i have reached the user store problem i have noticed that there is an access conflict on DataProtector constructor (when i try to initalize an DataProtector object) Frown | :(

so firstly i set the COM+ DPAPI Helper Application to run as a service (as in msdn's example) and it didn't work. secondly i set the COM+ application to run as library and it worked . my little question is what should i do to make DPAPI work in user store problem Confused | :confused:

Thanks, claudia

In vb.net when i declare a variable as object type then i can set any property for that object that is not assigned at design time but but will be assigned at runtime. for example:

dim a as object
if typeof a is textbox then
a.name="test1"
end if

The above code will not give any error at design time in vb.NET but in C# it will give an error during design time only - "'object' does not contain a definition for 'name'".

Please help me,how do i solve this problem.
Thanks in advance
Sheel

Sheel Gohe

The following should work:

if (typeof(a) is TextBox)
{
((TextBox) a).name="test1";
}

www.troschuetz.de

Thanks Stefan.

Sheel Gohe

Actually the codes should be:

object a = new object();
if( a is TextBox )
{
((TextBox) a).Name = "test1";
}

Or:

object a = new object();
if( a.GetType() is TextBox )
{
((TextBox) a).Name = "test1";
}

Actually, your code is just as incorrect.
LdqxYY wrote:
object a = new object();
if( a is TextBox )
{
((TextBox) a).Name = "test1";
}

If a has been instantiated as an object, then the line

if(a is textBox)

will always evaluate false

then in your second example:

LdqxYY wrote:
object a = new object();
if( a.GetType() is TextBox )
{
((TextBox) a).Name = "test1";
}

you are testing to see whether an instance of System.Type is-a TextBox - which it clearly isnt it is System.Type!

To correct these two examples assume that there is a TextBox on the form with the instance name myTextBox. Now assume that you have a variable named myVar which is of type object, but is set to myTextBox

// assumes the lines "object myVar;" and "myVar=myTextBox"
if(myVar is TextBox)
{
   ((TextBox)myVar).Text = "Hello World";
}

or in the second example above

if(myVar.GetType() == typeof(TextBox))
{
    ((TextBox)myVar).Text = "Hello World";
}

J4amieC,you are right!And I had realized my second example were incorrect after submitted.By the way,what exact mean in my first example is:
object a = new object();
//
//some codes handle with the "a"
//
if( a.GetType() is TextBox )
{
((TextBox) a).Name = "test1";
}
I forgot writing something,hehe...
Thanks again!

God!Wrong again,sorry!It should be:

object a = new object();
//
//some codes handle with the "a"
//
if( a is TextBox )
{
((TextBox) a).Name = "test1";
}

LdqxYY wrote:
were incorrect after submitted

That's why we have a Modify button Wink | ;)

How to make crystal report with utf-8 (my database is SQL 2000 and data was stored in UTF-8)
thanks,

Ok guys, i not even know if it's a problem but i've seen many c# tutorials that explain assembly compilation by command line and i've seen they usually use "csc (my arguments...)".

That "csc" is a bit strange for me because they only use csc directly("c:\>csc myarguments..." for example) but i have to type all the path to the csc.exe file (C:\Windows\Microsoft.NET...csc.exe Myarguments...).
How can i create a link to csc?

Thanks in advance

Heinz Suez

Add it's path to your path variable or copy it to a path that is there already, such as system32.

Christian Graus - Microsoft MVP - C++