Latest ads
-
Gemini AI PRO 18 months Offer- Hawaka
- Updated:
-
koko account
- DasunEranga
- Updated:
-
koko account
- DasunEranga
- Updated:
C# Programing FAQ - Post here
- Thread starter asachan
- Start date
http://www.careeracademy.com/index.asp?PageAction=VIEWPROD&ProdID=215
Machan mey video training CDs torrent wala tiyeda?
Machan mey video training CDs torrent wala tiyeda?
Im doing a small project... and from the Main Menu.. i want to show another Form..
so i call this
Now the problem is each time the user presses the Customer button, a new instance of the Form is created!!
How to prevent this??? Please help!
so i call this
Code:
private void btnCustomer_Click(object sender, EventArgs e)
{
frmCustomer fCus = new frmCustomer();
fCus.Show();
}Now the problem is each time the user presses the Customer button, a new instance of the Form is created!!
How to prevent this??? Please help!
Code:
frmCustomer fCus;
private void btnCustomer_Click(object sender, EventArgs e)
{
if(fCus == null ){
fCus = new frmCustomer();
}
fCus.Show();
}mata sure ne man java wala nam karanne oka
PS. This should work machan....
...happy coding
Last edited:
amila325 said:
elakiri machan!!! its working
thanx a lot
Object eka null da nadda kiyala baluwama hari machan
Thanx
amila325 said:hihihi elazzz
math tikak search karala baluwa... eka hari
so APIIT is over now isn't it????
na na.. thawa kohe iwara wennada... thawa thiyenawa adinna bara
Data Grid View Help!!!!!!!!!!!!
macho
i need a biiiig help
mama web eka search kalama mata vb walin karana hati awa.
mei link eka thiyenawa vdo ekak.eke thiyenne vb walin.mata oone e widiyata c# walin karanna.
LINK
macho
i need a biiiig help
mama c# application ekak haduwa.ekata database ekakuth connect kala.dan mata mage datagrid view eke column ekak thiyenawa amount kiyala.mata wenama dapu textbox ekakata ara amount kiyana column eke data wala total eka ganna oone.
mama web eka search kalama mata vb walin karana hati awa.
mei link eka thiyenawa vdo ekak.eke thiyenne vb walin.mata oone e widiyata c# walin karanna.
LINK
chindaara said:
Code:
int count()
{
int i=0;
int sum = 0;
for (i = 0; i < DGV1.Rows.Count; i++)
{
sum += Int32.Parse(DGV1.Rows[i].Cells["Amount"].Value.ToString());
}
return sum;
}Ranhiru said:DGV1 is your data grid view...hope this helps
macho
mama coding eka damma.but error ekak enawa
Error
Code:
int i = 0;
int Total = 0;
for (i = 0; i < costDataGridView1.Rows.Count; i++)
{
Total += Int32.Parse(costDataGridView1.Rows[i].Cells["dataGridViewTextBoxColumn11"].Value.ToString());
}
this.textBox1.Text = Total.ToString();macho mei image eke thiyenawa table eke properties.eke amount kiyana column eke name eka wenne "Amount" / "dataGridViewTextBoxColumn11"
"Amount" kiyana eka dammama error ekak enawa "unidentified column name" kiyala.
plz help me
Machan the first one is a problem because the column has a NULL value in it. Does the "Amount" column contain a null value??? If the "Amount" column contains NULL values, then it should be handled separately.
And for the second problem i think Amount should work :S
If amount does not seem to work, simply use the column index
So if the Amount column is the 3rd one, then the index is 2, because in C# its zero based indexes.
So this is perfectly all right too Using the index instead of the name Notice that now i check whether the value is not null. If Int32.Parse giving you any errors, try the Convert Class. Use Convert.ToInt32(whatever)...
Hope this helps
And for the second problem i think Amount should work :S
If amount does not seem to work, simply use the column index
So if the Amount column is the 3rd one, then the index is 2, because in C# its zero based indexes.
Code:
int i = 0;
int Total = 0;
for (i = 0; i < costDataGridView1.Rows.Count; i++)
{
if (costDataGridView1.Rows[i].Cells[2].Value != null)
Total += Int32.Parse(costDataGridView1.Rows[i].Cells[2].Value.ToString());
}
this.textBox1.Text = Total.ToString();So this is perfectly all right too
Using the index instead of the name Notice that now i check whether the value is not null. If Int32.Parse giving you any errors, try the Convert Class. Use Convert.ToInt32(whatever)...Hope this helps
Last edited:
THANX A LOT!!!!!!!!!!!!!!!!!!!!!
THANX A LOT MACHO.I WORKED.THNAX A LOOOOOOOOOOT
Ranhiru said:Machan the first one is a problem because the column has a NULL value in it. Does the "Amount" column contain a null value??? If the "Amount" column contains NULL values, then it should be handled separately.
And for the second problem i think Amount should work :S
If amount does not seem to work, simply use the column index
So if the Amount column is the 3rd one, then the index is 2, because in C# its zero based indexes.
Code:int i = 0; int Total = 0; for (i = 0; i < costDataGridView1.Rows.Count; i++) { if (costDataGridView1.Rows[i].Cells[2].Value != null) Total += Int32.Parse(costDataGridView1.Rows[i].Cells[2].Value.ToString()); } this.textBox1.Text = Total.ToString();
So this is perfectly all right too
Hope this helps
THANX A LOT MACHO.I WORKED.THNAX A LOOOOOOOOOOT
Anythin for me.... if you know VB .NET and C, you know C#Jack_Sparrow said:
Well almost... there are some deviations on how to code in C#... because its pure object oriented... but still its easy
