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FJJCENTU wrote: checkforilegalcrossthreads = false
That is a big no no. Please read this[^].
Luc Pattyn
Have a look at my entry for the lean-and-mean competition; please provide comments, feedback, discussion, and don’t forget to vote for it! Thank you.
Local announcement (Antwerp region): Lange Wapper? Neen!
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Hi
i have 2 tables :
Persons (master)
Images (detail)
each person can multiple images. i'm using tableAdapterManager to accomplish this and here is my code in my DataManager class :
public bool SavePersonWithImages(MyDataSet DataSet)
{
bool saved = false;
if (DataSet.GetChanges() != null)
{
try
{
MyDataSetTableAdapters.PersonsTableAdapter personAdapter = new MyDataSetTableAdapters.PersonsTableAdapter();
MyDataSetTableAdapters.ImagesTableAdapter imageAdapter = new MyDataSetTableAdapters.ImagesTableAdapter();
MyDataSetTableAdapters.TableAdapterManager manager = new MyDataSetTableAdapters.TableAdapterManager();
manager.PersonsTableAdapter = personAdapter;
manager.ImagesTableAdapter = imageAdapter;
int rowAffected = manager.UpdateAll(DataSet);
saved = (rowAffected > 0);
DataSet.AcceptChanges();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Error!", MessageBoxButtons.OK, MessageBoxIcon.Error);
DataSet.RejectChanges();
}
}
return saved;
}
the insert & delete works fine, but my problem when user edit the image with replace that image with new one, it's works successfully, but when i close the form and open it again, it's don't display image! here is my edit button code :
private void barBtnEditPerson_ItemClick(object sender, ItemClickEventArgs e)
{
if (this.personBindingSource.Count > 0)
{
MyDataSet.PersonRow personCurRow = (MyDataSet.PersonRow)((DataRowView)this.personBindingSource.Current).Row;
FrmZamin frm = new FrmZamin(personCurRow, this.amlakDataSet);
personCurRow.BeginEdit();
if (frm.ShowDialog() == DialogResult.OK)
{
this._frmLoading = new FrmWait("Saving data ...");
personCurRow.EndEdit();
DataManager dm = new DataManager();
dm.SavePersonWithImages(this.myDataSet);
this._frmLoading.Close();
this.backgroundWorker1.RunWorkerAsync();
}
else
{
personCurRow.CancelEdit();
}
this.myDataSet.Images.Clear();
}
}
can anybody know where does my problem and how to solve it ?
Note 1 : my database is access 2007
Note 2 : my images dataTable does not have any relation with persons dataTable or some other tables (in my DataSet Designer)
thanks in advance
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Hi
Is it possible to add a new item to a ComboBox when its bound to a DataView? Here's the code I use to fill my ComboBox:
DataView dv = new DataView(someDataTable, "FunctionID > '0'", "Function", DataViewRowState.OriginalRows);<br />
<br />
cboFunctions.ItemsSource = dv;<br />
cboFunctions.DisplayMemberPath = someDataTable.Columns[1].ToString();<br />
cboFunctions.SelectedValuePath = someDataTable.Columns[0].ToString();<br />
cboFunctions.SelectedIndex = 0;
I tried adding a new item like this:
cboFunctions.Items.Insert(0, "-Please select a part function-");
This gives me a error. The whole idea is to have a combobox item that is kind of like a dummy item just saying something like "-Please select-"
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Etienne_123 wrote: This gives me a error
And the error is...?
Etienne_123 wrote: adding a new item
I would think that you would add the new item to dv since that is what your itemssource is bound to.
Why is common sense not common?
Never argue with an idiot. They will drag you down to their level where they are an expert.
Sometimes it takes a lot of work to be lazy
Individuality is fine, as long as we do it together - F. Burns
Help humanity, join the CodeProject grid computing team here
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Hello could any body help me, i need to record the live stream coming from ip devices into a video file. I have looked online for various sdks, but not much luck, i need to do this in c#. Any help would be apriciated. Many thanks
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Hi people
I have a TextBlock that displays a calculated cost. The cost is stored in a double, and then I set TextBlock.Text to the cost.ToString(). What I want to know is, how do I convert this double value so that it displays only 2 decimal points e.g 56.99. Because at the moment it displays something like the following: 56.9999999999.
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cost.ToString("N2");
have a look at this[^]
Life goes very fast. Tomorrow, today is already yesterday.
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string ss = cost.ToString("N");
Have fun.
var question = (_2b || !(_2b));
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Etienne_123 wrote: displays only 2 decimal points e.g 56.99.
you probably mean two fractional digits, a real number only has one decimal point.
x.ToString("F2") would work for me; how about looking at the documentation?
Luc Pattyn
Have a look at my entry for the lean-and-mean competition; please provide comments, feedback, discussion, and don’t forget to vote for it! Thank you.
Local announcement (Antwerp region): Lange Wapper? Neen!
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Nevermind I figured it out.
I used:
double costTwoDecimals = Math.Round(costTotal, 2);
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Etienne_123 wrote: Nevermind I figured it out.
I used:
double costTwoDecimals = Math.Round(costTotal, 2);
...That's not what you asked for. if you pass that function 56.9999999999 you will get 57 not 56.99 like you said you wanted.
Life goes very fast. Tomorrow, today is already yesterday.
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As far as I know, the framework doesn't provide this explicitly. However, if you really must return a truncated string, then I've whipped up an extension method for you:
public static string ToDecimalPlace(this double i, int decimalPlaces)
{
string toString = i.ToString();
int decimalPoint = 0;
if ((i % 1) == 0)
return toString;
decimalPoint = toString.IndexOf('.');
return toString.Substring(0, decimalPoint + decimalPlaces + 1);
}
I'm personally a little concerned about the strings being created, but I can't see a simple way around that problem. It will only usually show up under high load anyway. And remember to vet the input - this is only a proof of concept. If you do something like (8.1111111111111111111111111).ToDecimalPlace(840) you'll get an IndexOutOfRange exception.
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Computafreak wrote: As far as I know, the framework doesn't provide this explicitly
double.ToString("F2")
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I've seen that. But when I declare a simple double variable, with a value identical to that of the OP, then call ToString("F2"), I simply get 57.00. It seems to round instead of truncate.
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Similar to the Computafreak solution, use an extension method:
public static double Truncate(this double d, int places)
{
double pow = Math.Pow(10, places);
return Math.Truncate(d * pow) / pow;
}
You can then use myDouble.Truncate(2).ToString() with any formatting you want.
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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Wow, that's clever. I hadn't thought of doing that - it'll be filed away for future use. That's actually a lot better than mine as well, because it doesn't use strings.
For the OP, what this function does is move the decimal place right by the number of places you want to get. Then it strips off the rest of the decimal places on that number, and moves the decimal place back again, so that everything stays the same. The sequence of events, assuming you want to convert 1.23456789 to 1.234 is this:
1.23456789 -> 1234.56789
Truncate -> 1234
Divide again -> 1.234
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The benefits of age and experience! (Or, being an old fart has some advantages, then...) 
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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Hello, I'm kind of new in C#. How i be able to access a method from my mainform from another form inside another project, but the same solution, without having to create a new object instance of the mainform?
for example, my mainform from project MainModule has a method to localize data, something like this:
public void LocalizeData(CultureInfo culture)
{
//codes here
}
How can i Access that from another project ModuleBody:
public void submit_click(Object sender, EventArgs e)
{
//How to access LocalizeData Method
}
Please help. Thanks.
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If the code is common (ie the same in each case) create a new class with the localisation code in. You will almost certainly need to pass in the instance of the form you want to be localised.
e.g. [Psuedocode]
public class Localizer
{
Form FormInstance { get; set; }
public void LocalizeData(CultureInfo culture)
{
}
public Localizer(Form formInstance)
{
FormInstance = fromInstace;
}
}
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I write windows service but I can't install it on windows 7.
What is the diffirentation between windows 7 and other windows OS when install windows service?
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None, AFAIK.
What error are you getting? Are you sure you are using administrative privileges when istalling the service?
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I don't get any error. I install windows service using with installutil but I can't see my installed service in the windows services.
I use same code on different windows OS, its work.
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Hi,
How do I get Excel Application object in automation add-in that is passed from VSTO Excel add-in 2003?
Thanks in Advance
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HI,
In a special case in our project i have to draw around 180,000 rectangles on the window, Its taking almost 2 seconds to do it, and it has zoom and scrolling features too. Is there any way to impove the performance.
Thanks
ravi
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