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Damn I almost started a new thread in ASP.NET
Just before typed the message thought first i'd ask you why(i couldn't understand how the hack it can be), but now I see your subject is answer to a completely different question. How come it posted to my thread?
MS Visual Studio.NET 2003
C#
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There was a goof up with the forums when I was posting, not sure exactly what happened but I noticed it as well.
- Nick Parker
My Blog | My Articles
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I have a ListBox control on my form which has the following properties set:
MultiColumn = false;<br />
SelectionMode = = SelectionMode.One;<br />
Sorted = false;
and I load the data as such:
DataSource = dt;<br />
DisplayMember = "CASE_NAME";<br />
ValueMember = "CASE_NAME";
All is fine, the ListBox displays the data just fine, with one problem. Before the user has selected any of the items in the ListBox the first item is highlighted as if the user has already selected it. Is there any way to show the initial display of the items in the ListBox without ANY of the items being highlighted?
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After binding it to the DataSource, set the SelectedIndex of the ListBox to -1
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Thanks, but that doesn't work!
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Hi
Did u set the SelectedIndex after binding the ListBox with the DataSet.
It is working for me. I am doing it after filling the DataSet which the DataSource for the ListBox like this.
private void Form1_Load(object sender, System.EventArgs e)
{
this.oleDbDataAdapter1.Fill(this.dataSet11);
this.listBox1.SelectedIndex = -1;
}
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I had filled my DataTable dt in a lower tier, and then bound the ListBox control from a call in the forms contructor, after all the controls have been instantiated. After I have bound my DataTable to the ListBox I have then set the ListBox SelectedIndex property to -1, but I still get the first item of the ListBox displayed as highlighted. I don't have any other code that would have selected an item in the ListBox.
Forgive me, but you appear to have a oleDbDataAdapter1 and dataSet11 on your form which you have bound to the listbox1 at design time, else the listbox1 doesn't appear to be bound to the dataSet11.
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Yeah,
For me also happening the same thing. I dont know why. But this workaround will solve your problem. You have to add an EventHandler for Form's Activated event and you have to add the following code in that EventHandler method.
private void Form1_Activated(object sender, System.EventArgs e)<br />
{<br />
this.listBox1.SelectedIndex = -1;<br />
this.listBox1.Invalidate();<br />
}
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i have created 2 datagrids. The upper one displays the currently available values and the lower one allows entering new avalues... When u enter a vale to the lower grid and click on a button(Add) the selected value
(s) should be added. If one entered a valid row and another row with missing fields only the valid row should be added and the invalid row should be remained (displayed).How can I achive this?.
samitha
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Get the row index of the row that is valid and use
DataTable.Rows.RemoveAt(rowIndex);
For each row that is valid, this will remove the row from the table the datagrid is bound to and therefore remove it from the datagrid itself.
Kev Pearman MCP
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how can i reverse-engineered from IL?
How can I stop my code being reverse-engineered from IL?
is there any tools for this ?
********************
S r e e j i t h N a i r
Bangalore - India
********************
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There are useful c# tools in the following link.
http://msdn.microsoft.com/vcsharp/team/tools/default.aspx
You can obfuscators also to prevent reverse engineering.
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how can i reverse-engineered from IL?
How can I stop my code being reverse-engineered from IL?
is there any tools for this ?
********************
S r e e j i t h N a i r
Bangalore - India
********************
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sreejith ss nair wrote:
how can i reverse-engineered from IL?
Use .NET Reflector. Search it on the internet.
sreejith ss nair wrote:
How can I stop my code being reverse-engineered from IL?
You must obfuscate it. There are many thrid parties that can do that.
Regards,
Alexandru Savescu
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hi,
how to get user object password in active directory(for example using c#).
and how to set the memberOf property of the user object using C#;
Thank you
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How I can transfer a file from the host to the client using .NET Remoting?
I try the following but not success.
Server Code:
static void Main(string[] args)
{
HttpChannel chnl = new HttpChannel(1403);
ChannelServices.RegisterChannel(chnl);
RemotingConfiguration.RegisterWellKnownServiceType(
typeof(ObjectCreation), "ObjectCreation.soap", WellKnownObjectMode.Singleton);
Console.WriteLine("Press key to terminate server");
Console.ReadLine();
}
public override object getAssembly()
{
string fileEntries = AppDomain.CurrentDomain.BaseDirectory + "HelloWorldClass.doc" ;
return LoadBinary(fileEntries);
}
private object LoadBinary(string Path)
{
object tAsm;
FileStream fs = new FileStream(Path,FileMode.Open,FileAccess.Read);
BinaryFormatter bf = new BinaryFormatter();
tAsm = bf.Deserialize(fs);
fs.Close();
return (object)tAsm;
}
Client Code:
private void cmdConnect_Click(object sender, System.EventArgs e)
{
ChannelServices.RegisterChannel(chnl);
obj = (BaseRemoteObject) Activator.GetObject(typeof(BaseRemoteObject),
"http://localhost:1403/ObjectCreation.soap");
MessageBox.Show("Channel to Server has connected");
}
private void cmdCallClass_Click(object sender, System.EventArgs e)
{
string fileEntries = AppDomain.CurrentDomain.BaseDirectory + "HelloWorldClass.dll" ;
object tAsm = obj.getAssembly();
FileStream fs = new FileStream(fileEntries,FileMode.Create,FileAccess.Write);
BinaryFormatter bf = new BinaryFormatter();
try
{
bf.Serialize(fs,tAsm);
fs.Close();
}
catch (Exception err)
{
MessageBox.Show(err.Message);
}
lAss = Assembly.LoadFrom(fileEntries);
Type[] FrmType = lAss.GetTypes();
foreach (Type typ in FrmType)
{
object lObj = Activator.CreateInstance(typ);
MethodInfo mi = typ.GetMethod("HelloWorld");
mi.Invoke(lObj , null);
}
}
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I am learning C#, coming from VB.NET
I would like to know what method is commonly used to make a decision based on the contents of an object.
For something like:
if ( obj is MyType1 )
...
else
if ( obj is MyType2 )
...
else
if ( obj is MyType3 )
...
could be quite lengthy.
Naively:
switch( obj )
{
case MyType1:
...
Case MyType2:
...
Case MyType3:
...
}
This, I realise is incorrect because switch only accepts integral types or strings.
Is there another way of doing it?
Any help appreciated,
Shayne
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Try
<br />
string temp = Object.GetType().ToString();<br />
switch(temp)<br />
{<br />
case "typeA":<br />
break;<br />
case "typeB":<br />
break;<br />
default:<br />
break;<br />
}<br />
Kev Pearman MCP
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Or, the best way is to use visitor pattern (http://www.dofactory.com/Patterns/PatternVisitor.aspx), especially if you cast your objects after doing "is".
if (obj is MyType)
{
objOfMyType = (MyType)obj;
...
}
The visitor pattern will get rid of casts, and allow you to create new classes and not having to add if (obj is MyNewType) or case statements.
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I am trying to develope a small RTF writer to generate project report at runtime, with a limited RTF writing capability. RTF is one page document only, untill we intentionally put page breaks in it and Project report consists of number of pages. Thus, on what criteria it should be decided to insert page break? How to keep track of page's empty area before inserting anything?
Please guide.
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Yes some information is given under 'Page Information', but is there some way to identify exactly how many characters I can print before I run out of room in the current rectangle that defines the output, and go to a new page. There is no real-time example 
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Is this correct ? : (if i inherit this class)
<br />
Public MustInherit Class Singleton(Of T)<br />
Private Shared Instance As T<br />
Private Shared Created As Boolean<br />
<br />
Public Shared Function GetInstance() As T<br />
If Not Created Then<br />
Instance = Activator.CreateInstance(GetType(T), True)<br />
Created = True<br />
End If<br />
Return Instance<br />
End Function<br />
<br />
Public Overrides Function ToString() As String<br />
Return "Instancia única de " & GetType(T).ToString<br />
End Function<br />
<br />
End Class<br />
P.D.:I know it is not C# but right now i don't have generics-enabled C# right here.
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Here is a singleton in C#:
public sealed class SqlManager
{
private SqlManager(){}
private static SqlManager instance;
private static object syncRoot = new Object();
public static SqlManager Instance
{
get
{
if(SqlManager.instance == null)
{
lock(syncRoot)
{
if(SqlManager.instance == null)
{
SqlManager mgr = new SqlManager();
System.Threading.Thread.MemoryBarrier();
SqlManager.instance = mgr;
}
}
}
return SqlManager.instance;
}
}
}
- Nick Parker
My Blog | My Articles
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The request failed with HTTP status 401: Unauthorized.
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.Net.WebException: The request failed with HTTP status 401: Unauthorized.
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