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How to blink label in C#.Please let me know the solution
thanks in advance
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Use Timer with small time duration. Toggle the visibility of the label in the Tick event.
जय हिंद
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d@nish wrote: Use Timer with small time duration. Toggle the visibility of the label in the Tick event.
...but don't do it unless it is realy important because you will annoy the heck out of your users.
No trees were harmed in the sending of this message; however, a significant number of electrons were slightly inconvenienced.
This message is made of fully recyclable Zeros and Ones
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Blink means Visible and False in a Interval.
If you can think then I Can.
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Use Timer object and set label fore color different from its orignal and then set it orignal color,it will look like blinkin..
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Hello,
I have a main form with a button that opens another form. But after it open it i can't return to the main form without closing this form. What do i need to write so i could return to the main form without closing the second form?
BTW - How, where and why do i need to do the form dispose?
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Use Show() instead of ShowDialog().
जय हिंद
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OK. I will use form2.show();
When i close this form and want to open it again it writes an error exception says: "Cannot access a disposed object. Object name: 'Form2'."
What do i need to do to make it work?
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Can you post the code how you are doing this?
May be you are using a class level object for Form2 and calling Show method in button click event. You need to create object in the click event itself. Like this:
private void button1_Click(object sender, EventArgs e)
{
Form2 o = new Form2();
o.Show();
}
जय हिंद
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Ok,
I wrote before the "Form2 form2 = new form2();" not in the method of opening the form (button method) but outside in the class .
If i write it in the method it works but the problem is when i click the button of this form opening couple of times it opens again and again this form2 (i have many form2 opened).
I thought to use "if..." to check if form2 is already open and this way it won't open it again and again.
But maybe there is another way to prevent it?
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Use Application.OpenForms property to check if the form is already opened. If it already open, just bring that to front and set focus.
जय हिंद
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Another question-
If i write the new form2 in a method (of the button to open this form),
how can i use form2 in another method- for example a method that will check if this form2 is already open? Because in the other method it doesn't see the declaration of form2.
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Application.OpenForms will work in any method.
जय हिंद
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hi all
i am developing windows application in c#.net.i am using Socket concept in that.i have used one datagrid . using socket i filled up my data in grid and also i m using timer to update data in some columns of the data grid
now my problem is when i click on to the column of grid and try to wite in that column textbox i get the error for cross-thread invalidoperation
can anybody help into this problem
thanks in advance
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Hi,
use delegate to refresh your data.
cheers,
Elie.
dghdfghdfghdfghdgh
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hi Elie
thanks for solution but
is there any other way of it?
just because i m refresing the data thru the function inclass and that function i called thruout the application
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that function should be called from a delegate
so create the delegate in ur class and call it.
Elie.
dghdfghdfghdfghdgh
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Ankit At Codeproject wrote: now my problem is when i click on to the column of grid and try to wite in that column textbox i get the error for cross-thread invalidoperation
Which thread created the datagrid? What timer are you using, System.Windows.Forms.Timer or one of the other ones?
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GUI components can only be modified from the thread that created them. As Elie said, you need to create a delegate for the function that modifies your datagrid, and then Invoke it on the GUI thread. Normally I do it like so, although there's probably a better way to do it:
delegate ReturnType DelegateType(T1 arg1, T2 arg2);
DelegateType del = YourMethod;
ReturnType YourMethod(T1 arg1, T2 arg2)
{
if(InvokeRequired)
{
return Invoke(yourDelegate, new object[]{arg1, arg2});
}
else
{
return someValue
}
}
For more info, check out the MSDN Documention for Control.Invoke[^].
Dybs
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Hello,
i've an application that use a commandbuilder and a dataset and a datarow for inserting a new record in the database,but while i am trying to insert Arabic values they appear like ????
is their any solution or should i use the insert statement with a prefix N before values.
my code look like this :
SqlConnection myConn = new SqlConnection(SqlManager.Instance.ConnectionString);
SqlDataAdapter myAdapter = new SqlDataAdapter();
myAdapter.SelectCommand = new SqlCommand("select * from Exceptions", myConn);
SqlCommandBuilder custCB = new SqlCommandBuilder(myAdapter);
myConn.Open();
DataSet myDataSet = new DataSet();
myAdapter.Fill(myDataSet);
DataRow dr = myDataSet.Tables[0].NewRow();
string b = "شسيس";
dr[1] = b;
myDataSet.Tables[0].Rows.Add(dr);
myAdapter.Update(myDataSet);
myConn.Close();
dghdfghdfghdfghdgh
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Check these links: this[^] and this[^]. Might help you.
जय हिंद
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i am using datetimepicker component for selecting dates.
and i will store that in string variable
(Eg: string date1 = renewalDTP.Value.Day + "/" + renewalDTP.Value.Month + "/" + renewalDTP.Value.Year;)
if i want to compare two dates how can done it....
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Read up on the DateTime class and discover at least one method that yields a date difference, expressed as a TimeSpan.
Luc Pattyn [Forum Guidelines] [My Articles]
The quality and detail of your question reflects on the effectiveness of the help you are likely to get.
Show formatted code inside PRE tags, and give clear symptoms when describing a problem.
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 I am having a problem with Tableadaperts. I am trying to insert a new record into the database using the Tableadapert.insert.
I have commented out // [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
and put a break point to see how the method runs every thing looks fine no exceptions. I get a return value of the record but the database table remains empty.
What am I doing wrong? The tableadaper is supposed to directly interact with the database?
private void button1_Click(object sender, EventArgs e)
{
try {
int val = 0;
tbUsersTableAdapter ta = new tbUsersTableAdapter();
val = ta.Insert("other1", "other");
//val retuns 1
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
}
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I don't use the tableadapter but it seems to me you need to give it various bits of information, like the connection, insert statement, update statement etc. You seem to have created an adapter, thrown some data at it and expected it to magic the data into the database.
I suggest you do some reading/research before you cry for help, this issue has been answered MANY times and there are examples and tutorials out there.
Never underestimate the power of human stupidity
RAH
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