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Hi
In my windows application i am receiving data's from serial port
and storing it in database (SQL2005). I am displaying the data in gridview, currently i am using a button to update and view database.
Now what i need is to display updated datas in gridview with out the button
thanks in advance
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u ca use timer to refresh the data periodically
rahul
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Though, timer can be one of the option but I would recommed to use Manual Reset Event[^] to it.
Please remember to rate helpful or unhelpful answers, it lets us and people reading the forums know if our answers are any good.
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I just want to print and I've got the code msdn http://msdn.microsoft.com/en-us/library/aa287528(VS.71).aspx[^]
private void button3_Click(object sender, EventArgs e)
{
printDocument1.Print();
}
private void printDocument1_PrintPage(System.Object sender, System.Drawing.Printing.PrintPageEventArgs e)
{
PaintEventArgs myPaintArgs = new PaintEventArgs(e.Graphics, new Rectangle(new Point(0, 0), this.Size));
InvokePaint(dataGridView1, myPaintArgs);
}
When I clicked at button 3 ,I got just only page and nothing in side
What's wrong with my code
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I am using vs2003, c#.net.
In my application am using picture box control, and creating some tiff files.
Now when this tiff file got created i am loading it in picture box.
using Image.FromFile method.
Now on Save option i am saving this tiff file to user specify location.
after that i want to delete the file of picture box, so i am setting
pictureBox.Image = null;
//code for deleting the file
But its not working, how can i delete the file?
any comment/help appreciated !!
regards
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I believe the previous call still holds an active handle. Can you scope it or replace it by a MemoryStream equivalent so that the active handle can be overcome?
Vasudevan Deepak Kumar
Personal Homepage Tech Gossips
The woods are lovely, dark and deep,
But I have promises to keep,
And miles to go before I sleep,
And miles to go before I sleep!
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I have met the same problem,But I used this code to solve the problem
FileStream fs = new FileStream(path, FileMode.Open, FileAccess.Read);
PictrureBox.Image=Image.FromStream(fs);
fs.Close();
then you can delete the image file.
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Hello,
I am using DataGridViewComboBoxColumn type column in my DataGridView. I have assigned data source to List<myobject>. I have set displayMember and ValueMember for the combo.
Now i want to assign default value to display initially but it is giving error "Default Error Dialog" saying wrong input to cell. I found it is because of different displayMember and ValueMember property values.
How should i assigned default value so it display as user wants?
Thanks a lot.
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Have you tried the following sample code:
private void dataGridView1_CellFormatting(object sender, DataGridViewCellFormattingEventArgs e)
{
if (e.ColumnIndex == 0) // your DataGridViewComboBoxColumn index
{
e.Value = "Default value";
}
}
tbhattacharjee
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What is IEEE 754 format number? how to convert a float decimal number to single precision (4 byte) IEEE 754 format number?
Thanks!
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IEEE 754 format number[^]
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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hi all,
i have an object where some data store as
foreach(var obj in listbox.items)
{
MessageBox.Show(obj.ToString());
}
display as
{SubjectId = 1,SubjectName =Art1}
how can get only SubjectId from this object.
thanks.
modified on Monday, May 18, 2009 1:48 AM
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obj must be having a property for SubjectID. Use it.
जय हिंद
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may you explain too.
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How are you adding items to this listbox?
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Don't be silly, 'adding stuff' is in year 2 of the course!
Panic, Chaos, Destruction.
My work here is done.
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lst2.ValueMember = "SubjectId";
lst2.DisplayMember = "SubjectName";
lst2Items.Add(lst1.SelectedItem);
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Is there a way in c# to create a string and use that as an object or control name?
For example, if I had an object "listBox.foo", and 2 string variables "string string1 = "listBox"; string string2 = "foo";, is there anyway to build the object name from that so I could call a method like
${string1+"."+string2"}.Visible=false"
Thanks for any pointers!
I have looked at the FindControl function so I could do "mycontrol = FindControl(string1+string2); mycontrol.Visible=false". However, although I use System.Web.UI, the compiler still complains that it's not available in the context.
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Like this:
string x = "control_name";<br />
this.Controls[x].Visible = false;
जय हिंद
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Hi friends, i got a problem with connecting data of controls to a database at runtime.
First, i wanted to create "n" number of textbox controls at runtime. And it was successful.
Secondly, i wanted to store content or data of the textboxes to my database, the problem is since the controls of Textbox are going to be created at runtime, how can i represent the value(data) of those textboxes at runtime ?
Example: if i need to create 3(n == 3)textboxes and wanted to store their data into my table.
Insert into table1 values(text1.text, text2.text, text3.text);
if( n == 5)
Insert into table1 values(text1.text, text2.text, text3.text, text4.text, text5.text);
Girmay
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What is the criteria which governs the number of textboxes? What is the structure of table1?
जय हिंद
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I am getting the following message box whenever I try to debug the code.
“The following module was built either with optimization enabled or without debug information:”
“To debug this module, change its project build configuration to Debug mode.
To suppress this message, disable the ‘Warn if no user code on launch’ debugger option”
I have built the entire code in Debug mode and no where I have enabled the optimization setting.
I am using Microsoft Visual Studio 2008.
I am using the C# .NET for the very first time please help me out in this.
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Can you see .pdb files for your assemblies in the bin/Debug directory? Does cleaning and rebuilding in Debug mode help?
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hi,
i am using to retrive the value from listbox items as
foreach (var obj in listbox.Items)
{
?????????????????
}
but i have no idea what should be in foreach body.
thanks
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