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BIOS Date and System.DateTime.Now are one and the same; change one, the other changes with it.
BTW: there is NO solution to your problem; the owner of a stand-alone PC can do to it whatever he chooses. What you can do is:
- use an external system (such as a server on the network or Internet);
- use a dongle, i.e. some piece of hardware+software the user cannot forge as it contains unfamiliar stuff
- hide information at several unexpected locations (registry, file system).
Plus: improve security by applying encryption.
And whatever you do, the code involved could always be reverse-engineered.
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Thanks for reply....
i don't aware of dongle concept. can u give a brief explanation or give article related this please. And can we make dongle software in same c# . or which language we want uses for this..
Thanks....
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I want to write a word at at a time in MS word by using voice. Not a single letter. is it possible .if it is how it is possible....give idea...or process..
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You can use the Microsoft Speech SDK with Word interop.
But I'm sure that Windows 7 and Windows Vista can already do this.
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sir i also know that it is already exists in windows 7....but i want to implement it myself..because it is a task of my project in undergraduate level...if you have any idea or code please help me..by the way i have already done voice command operating system and using voice i can open the MS word page.....
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Use the Microsoft Speech SDK and Word interop.
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Sir,
i think you can't understand my problem..using voice command i can open the MS word page.. now i want to write here using voice....i can do it as a letter for e.g a b c using command. but i want to write a word for e.g you, table etc... how can i do it...please help me.
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This capability already exists in Word. No code required. It's been in Word since 2003, I think.
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hi all,
i am trying to deserialize a xml string into an object but i am getting following error :
"An exception of type 'System.InvalidCastOperationException' occured in System.Xml.dll but was not handled in user code.
Additional information: There is an error in XML document(1,2)."
I am using following code to deserialize :
object obj = new object();
System.Xml.Serialization.XmlSerializer x = new XmlSerializer(obj.GetType());
StringReader sr = new StringReader(strNewXml);
XmlTextReader xml = new XmlTextReader(sr);
obj = (object)x.Deserialize(xml);
I tried to see the value of XmlTextReader xml, but it is showing as {None}.
I even tried with a string which i earlier serialized from an object but same error is displaying with it too.
Can anyone tell me where i am doing wrong.
Thanks and Regards,
Nagendra
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I have solved the problem by modifying my code as below:
object objNewTransactionEntry = new object();
XmlRootAttribute xmlRoot = new XmlRootAttribute("Session");
System.Xml.Serialization.XmlSerializer y = new XmlSerializer(objNewTransactionEntry.GetType(), xmlRoot);
StringReader sReader = new StringReader(strNewXml);
XmlTextReader xmlReader = new XmlTextReader(sReader);
objNewTransactionEntry = (object)y.Deserialize(xmlReader);
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I have attached the following code. I have a datagridview with three comboboxes on it. When I select an item from the first combobox it functions as intended. The problem I am having is that when I click on the second or third combobox it executes the item_SelectedIndexChanged event as shown below. I know I am missing something stupid! Any help is appreciated! Thanks!
private void dataGridView1_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
{
int columnindex = dataGridView1.CurrentCell.ColumnIndex;
ComboBox combo;
if (dataGridView1.CurrentCell.ColumnIndex == 3)
{
combo = e.Control as ComboBox;
if (combo == null) return;
combo.SelectedIndexChanged -= item_SelectedIndexChanged;
combo.SelectedIndexChanged += item_SelectedIndexChanged;
}
}
void item_SelectedIndexChanged(object sender, EventArgs e)
{
ComboBox cmbBox = (ComboBox)sender;
int x = Convert.ToInt32(cmbBox.SelectedIndex.ToString());
int y = dataGridView1.CurrentRow.Index;
dataGridView1.Rows[y].Cells[4].Value = dsInvoice.Parts.Rows[x]["DESC"].ToString();
dataGridView1.Rows[y].Cells[5].Value = Convert.ToDecimal(dsInvoice.Parts.Rows[x]["Price"].ToString());
}
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kruegersck wrote: The problem I am having is that when I click on the second or third combobox it executes the item_SelectedIndexChanged event as shown below.
I'm not sure what you mean. Is the problem that it is supposed to execute that routine and does something you don't want, or that you want it to execute something else?
If you want it to do something else, we need to know what you are trying to do.
If you don't want it to execute that routine, then remove it from the events or use a different routine.CQ de W5ALT
Walt Fair, Jr., P. E.
Comport Computing
Specializing in Technical Engineering Software
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I have RichTextBox with the ScrollBars property set to Both. In a forms-based program, I would like to be able to programatically determine if a given scroll bar--vertical or horizontal--is visible (i.e., showing or not, depending on the RichTextBox contents.)
Thanks,
Tom
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Hi,
AFAIK that will not be simple as there is no .NET support for it. I would suggest:
- getting the Handle;
- calling EnumChildWindows;
- somehow recognizing which of those are scroll bars (don't recall how right now);
- look at their visibility.
That will take a lot of P/Invoke stuff; these prototypes may help:
public delegate bool LP_EnumWindowsProc(IntPtr hWnd, IntPtr lParam);
[DllImport("user32.dll", CallingConvention=CallingConvention.StdCall)]
public static extern int EnumChildWindows(IntPtr hParent,
LP_EnumWindowsProc ewp, IntPtr lParam);
[DllImport("user32.dll", CallingConvention=CallingConvention.StdCall)]
public static extern bool IsWindowVisible(IntPtr hWnd);
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Hi,
There's an article on MSDN with VB code describing how this can be done by testing for the WS_HSCROLL and WS_VSCROLL bits in the window style retrieved with GetWindowLong.
How To Detect If Scroll Bars Are Visible on a Control[^] and it is applicable to .Net as the underlying control is the same. Here's an excerpt from a C# test programme.
[DllImport("user32.dll", SetLastError = true)]
static extern int GetWindowLong(IntPtr hWnd, int nIndex);
private const Int32 GWL_STYLE = -16;
private const Int32 WS_HSCROLL = 0x100000;
private const Int32 WS_VSCROLL = 0x200000;
private void TestForSB(RichTextBox rtb) {
Int32 style = GetWindowLong(rtb.Handle, GWL_STYLE);
Boolean hasVertical = (style & WS_VSCROLL) != 0;
Boolean hasHorizontal = (style & WS_HSCROLL) != 0;
label1.Text = String.Format("Vertical: {0}, Horizontal: {1}", hasVertical, hasHorizontal);
}
Alan.
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Yes, that's much easier.
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Hi
I've used from this link to define a new simple type and then save to disk with .dll extension via this code :
private void button1_Click(object sender, EventArgs e)
{
AssemblyName asmName = new AssemblyName();
asmName.Name = "HelloWorld";
AssemblyBuilder asmBuilder = Thread.GetDomain().DefineDynamicAssembly(asmName, AssemblyBuilderAccess.RunAndSave);
ModuleBuilder modBuilder = asmBuilder.DefineDynamicModule("HelloWorld");
TypeBuilder typeBuilder = modBuilder.DefineType("Hello", TypeAttributes.Public, typeof(object), new Type[] { typeof(IHello) });
MethodBuilder methodBuilder = typeBuilder.DefineMethod("SayHello", MethodAttributes.Private | MethodAttributes.Virtual, typeof(void), new Type[] { typeof(string) });
typeBuilder.DefineMethodOverride(methodBuilder, typeof(IHello).GetMethod("SayHello"));
ILGenerator il = methodBuilder.GetILGenerator();
il.Emit(OpCodes.Ldstr, "Hello, {0} World!");
il.Emit(OpCodes.Ldarg_1);
il.Emit(OpCodes.Call, typeof(string).GetMethod("Format", new Type[] { typeof(string), typeof(object) }));
il.Emit(OpCodes.Call, typeof(Console).GetMethod("WriteLine", new Type[] { typeof(string) }));
il.Emit(OpCodes.Ret);
Type type = typeBuilder.CreateType();
IHello hello = (IHello)Activator.CreateInstance(type);
hello.SayHello("Emit");
asmBuilder.Save(asmName.Name + ".dll");
}
it saved my dll on disk, but when i open it via Reflector, it does not have anything! just have a module named 'RefEmit_OnDiskManifestModule'
can anybody help me where is my problem and how to solve it ?
thanks in advance
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Hi,
IMO the problem is with the DefineDynamicModule(), where you should use an overload and specify the DLL file there too.
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I have a Treeview where I want to programmingly change index, but aparently that is a challenge that is more than I can do on my own.
My treeview looks like this
Node1(Groups)
+Child1
+Child2
+Child3
Node2(New node to insert)
Node3(Search Result)
Above is the wanted treeview layout.
I have manually added Node1 with child nodes, and Node3.
Now I wanted to add the node, as in this example called Node2, but how do i add this node, sort the Node rows and still make sure that Node1 stay in top and Node3 always is at the end?
Any taker on this idea?
I had initially thought to change treeview1.nodes["Node1"].index = 0 and treeview.nodes["Node3"].index = treeview1.lastindex, but that would not work, as index is read only.
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Message Closed
modified 23-Nov-14 6:32am.
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Ofcause! Thanks buddy.
Is there any way to move a node to a specific index? ie when I do a sort, I can't "lock" some nodes, so have to move them back to the index location again.
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Create a temporary treeNode, set it to the one you want to move, remove it from the old location and insert it at the desired location.
OK heres a posible pseudo code/steps:
1) Create a temp TreeNodeCollection :
TreeNodeCollection tmp = (TreeNodeCollection)treeView1.Nodes["myNode"].Clone();
TreeNodeCollection tmp = (TreeNodeCollection)treeView1.Nodes[idx].Clone();
2) Remove the node from the old location
treeView1.Nodes.RemoveAt(idx);
3) Insert it at the desired location
treeView1.Nodes.Insert(desired_Idx, tmp[0]);
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I have a bit of a dilemma - in the ComboBoxColumn, I have added various numbers from 0 to 11. I need people to be able to type into the ComboBoxes in that column if the Combobox doesn't contain a value they need.
So now How can i do that ?
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