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thanks this is very useful information wish more people to go through it
you have good knowledge of the topic why don't you write articles 
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hi
i have a table in my dataset and i create another datatable as "dt",i want to copy a few rows from myDataset.Tables[0] to dt but the following error shown me :
This row already belongs to another table.
how to solve my problem ?
My code is :
foreach (DataGridViewRow _gridViewRow in dataGridView1.Rows)
{
if (_gridViewRow.Cells[0].Value != null)
{
if (_gridViewRow.Cells[0].Value.ToString() == "True")
{
//_gridViewRow.Visible = true;
//c++;
DataRow row = ds_zamin1.Khaneh_1.Rows[_gridViewRow.Index];
ds_zamin1.Khaneh_1.Rows.Remove(row);
dt.Rows.Add(row); //error in this line }
}
}
this.dataGridView2.DataSource = dt;
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Use DataTable.ImportRow() instead.
Regards ![Rose | [Rose]](https://codeproject.global.ssl.fastly.net/script/Forums/Images/rose.gif)
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hi
thanks .. it is works, but a Bigger Problem :
when i set Datagridview2.Datasource to dt, nothing occured and imported rows does not appear in datagridview2, how to solve this problem ?
My Code Is :
DataTable dt = new DataTable();
foreach (DataGridViewRow _gridViewRow in dataGridView1.Rows)
{
if (_gridViewRow.Cells[0].Value != null)
{
if (_gridViewRow.Cells[0].Value.ToString() == "True")
{
DataRow row = ds_zamin1.Khaneh_1.Rows[_gridViewRow.Index];
dt.ImportRow(row);
}
}
}
this.dataGridView1.DataSource = dt; // Nothing Occured
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First allow me to put a small touch on your code -Don't forget to add the pre tags next time please;)-
DataTable dt = new DataTable();
foreach (DataGridViewRow _gridViewRow in dataGridView1.Rows)
{
if (_gridViewRow.Cells[0].Value != null && _gridViewRow.Cells[0].Value.ToString() == "True")
dt.ImportRow(ds_zamin1.Khaneh_1.Rows[_gridViewRow.Index]);
}
this.dataGridView1.DataSource = dt;
If dt is a local variable, then it'll be destroyed after the current method is finished which for sure wil simply make nothing.
Regards
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first:clone the dataset.table[0] to dt,
seconde is your code.ok
Maybe
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Hi!
I need to load a DataGridViewComboBoxCell from dynamic SQL data and the other DataGridViewTextBoxCell from another SQL datasource.
Thats not it... i need also be able to edit one single value from it.
For exmple, I need to be able to select some item or insted be able to insert a new value to get from some insert qerry. All this for earch row in a normal DataGridView Component from Visual Studio .Net 2005
tnks!
___________________________
vykom's best.
Free your mind! use GPL.
up to open source!!!
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If you need to populate a DataGridView from multiple sources, you can do that using DataBindingSource with no problem. You can either specify a data member for each column manually, or I'd go for making a DataView with the custom view you want to make using a SQL SELECT statement.
About your second question, I don't really understand what you want to do. Maybe you could give an example or be more specific?
Regards
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well, tnks for that.
About the second question, what I need is something like this:
Some user, can manually select an item loaded in the DataGridViewComboBoxCell, but, in any case, he can manually insert a value typing it too.
That's why I can't explicity load all items from a BindingSource or TableAdapter normally, because I wouldn't add or edit any item from the control.
Y try getting the full action over "mouseclicked" and "itemselected", but I couln't add an item in the combo .... exception released because i'm trying to edit all the concurrency of the BindingSource. And also loading the commbo manually, I couln't draw a simple TextBox in the place of the ComoboBoxCell..
It's kind of tricky.
(sorry my english)
___________________________
vykom's best.
Free your mind! use GPL.
up to open source!!!
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I guess you'd have to do it manually.
You'd check if the value written in the combobox is available in your datasource. If not add it directly in the datasource using a SQL Statement.
Did I get you right this time, or am I still astray?
Regards
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Right in the correct spot !!!!!!
Tanks a lot. I've make it work thanks to you!
see you around ????
___________________________
vykom's best.
Free your mind! use GPL.
up to open source!!!
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can i make a pointer in console by c#, like in this program which reads an integer K and prints the list of clients of lawyer K. for each K (consists 4 alphabetized lists of clients and their respective lawyer ). or we must make it in c++
thx a lot
LAWyer Point
1 Davis 4
2 Levine 12
3 Nelson 21
4 Rogers 8
Client age link
1 hall 35 16
2 moss 28 13
3 ford 47 25
4 brown 54 22
5 ginn 38 14
6 pride 42 29
7
8 berk 38 3
9 white 45 0
10
11 todd 25 0
12 dixon 32 24
13 new 46 6
14 har 42 30
15 AVAIL 15
16 jack 52 27
17
18 robert 40 0
19
20 eisen 32 1
21 adams 48 5
22 coh 36 20
23
24 fis 33 18
25 gra 42 11
26
27 parker 50 9
28
29 singer 45 0
30 lew 28 2
-- modified at 16:22 Thursday 23rd November, 2006
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Could you clearify the question? I don't really understand what you want to do, and certainly not how it has anything at all to do with pointers.
---
b { font-weight: normal; }
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amirafouad21 wrote: integer K and prints the list of clients of lawyer K
Wait a minute?!! K is an integer or a lawyer?!!
amirafouad21 wrote: prints the list of clients of lawyer K. for each K
Am I smelling Database in here? If you want to manipulate data go for SQL, and yes you can do that in C#.
Regards
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i don't understand u will but if u want to use pointer u can use it using unsafe code
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I`m using System.IO.DriveInfo.GetDrives() funcd tion to get DriveInfo anextract information about drives but it works really bad with SATA disks (gives me errors)?
Does anybody have solution for this?
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Vertyg0 wrote: but it works really bad with SATA disks (gives me errors)
What are the errors you get exactly? Also a code snippet would be very helpful.
Regards
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DriveInfo[] drivesInfo = DriveInfo.GetDrives();
foreach (DriveInfo drive in drivesInfo)
listBox1.Items.Add(drive.Name + " " + drive.VolumeLabel);
************** Exception Text **************
System.IO.IOException: The device is not ready.
at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
at System.IO.__Error.WinIODriveError(String driveName, Int32 errorCode)
at System.IO.DriveInfo.get_VolumeLabel()
at SqlServerMonitor.AddDisk.AddDisk_Load(Object sender, EventArgs e) in C:\...\AddDisk.cs:line 23
at System.Windows.Forms.Form.OnLoad(EventArgs e)
at System.Windows.Forms.Form.OnCreateControl()
at System.Windows.Forms.Control.CreateControl(Boolean fIgnoreVisible)
at System.Windows.Forms.Control.CreateControl()
at System.Windows.Forms.Control.WmShowWindow(Message& m)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
at System.Windows.Forms.ContainerControl.WndProc(Message& m)
at System.Windows.Forms.Form.WmShowWindow(Message& m)
at System.Windows.Forms.Form.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
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I would put the listBox1.Items.Add... in a try/catch , because you probably are asking your DVD-drive to tell you the VolumeLabel and if there is no DVD in it you will get an exception.
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Hello Everyone
I was trying to write the algorithm that finds the anagram of words randomaly
for example hello
so far this is what i have
public void findAnagram(String prefix, String suffix)
{
String newPrefix, newSuffix;
if (suffix.Length == 1)
{
Console.WriteLine(prefix + suffix);
}
else
{
for (int i = 0; i < suffix.Length; i++)
{
newSuffix = suffix.Substring(1, suffix.Length);
newPrefix = prefix + suffix[0];
findAnagram(newPrefix, newSuffix);
suffix = newSuffix + suffix[0];
}
}
}
but for some reason it throws me a exception when i put it in main method
"Index and length must refer to a location within the string."
i am wondering if there is a better way to find a anagram of any word
thank you
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homer simpsom wrote: suffix.Length
As you're starting at 1, and it's 0 indexed, the Length property goes one character past the end.
Christian Graus - C++ MVP
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Hi Friends
I m using sqlhelper class file which is stored in DataAccessLayer,it is used for connecting the data from database.
But when i m using this sqlhelper in another class getting an error.
In visual studio 2003,the code is
SqlHelper.ExecuteDataset(ConfigurationSettings.AppSettings[Projectname.Global.CfgKeyConnString]
, "SPName", parameters);
but same code in 2005, getting an error.
so could any one give an idea to solve this problem.
Thanking U,
Naren.
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Is it possible to serialize an Image?
I have a class that containes an Image loaded from a jpeg, when I tried to serialize it I couldn't.
any help would be appreciated
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Hi
I would like to see the query log from sqlserver 2000, but i cannot. How can i do that?
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