May 25th, 2010 
Jaffar Step to deploy WAR/JAR File in JBOSS
Popularity: 3% [?]
May 22nd, 2010 Jaffar String
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String are immutable object.Its value cannot be changed(constant).String object are readonly.If you create one instance of string and change the value of string then it create new instance.
String Buffer
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String Buffer is mutable.Its Value can be Changed.If you create one instance and append the text without creating a new instance
Example:
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String
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String str=”welcome”;
str + = “to fordevs”;
String Buffer
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StringBuffer strbuff=new StringBuffer(“welcome”);
strbuff.append(“to fordevs”);
Both code give same output but Second approach much faster than first one.
Popularity: 3% [?]
March 23rd, 2010 joy Normally if we focus a textbox control the cursor would be in the start of the textbox.But when there is text already in the textbox it would be annoying if the cursor is in start.It would be better if the cursor is at the end of content in texbox.
Thus to position the cursor at the end of the text content of a textBox control,we have to call the select method and specify the selection start position to the length of the text and a selection length to 0.
txtExample.focus(); txtExample.Select(txtExample.Text.Length, 0);
Ref : msdn
Popularity: 8% [?]
March 21st, 2010 Jaffar To Find the 2nd Maximum Of Mark in a Data Set
SELECT * FROM Student a WHERE 2=(SELECT count(DISTINCT Mark) FROM Student b WHERE a.Mark<=b.Mark)
To Find the 2nd Minimum Of Mark in a Data Set
SELECT * FROM Student a WHERE 2=(SELECT count(DISTINCT Mark) FROM Student b WHERE a.Mark>=b.Mark)
To Find nth Maximum and Minimum
SELECT * FROM Student a WHERE n=(SELECT count(DISTINCT Mark) FROM Student b WHERE a.Mark<=b.Mark)
SELECT * FROM Student a WHERE n=(SELECT count(DISTINCT Mark) FROM Student b WHERE a.Mark>=b.Mark)
replace n with the corresponding number
Popularity: 5% [?]
January 26th, 2010 joy WPF does not allow text wrapping for label control.Thus to wrap a label with a fixed width,we have to place the TextBlock control inside the label control and set its TextWrapping property to “Wrap”.
<Label Width=”50″>
<TextBlock TextWrapping=”Wrap”> I am label with width 50</TextBlock>
</Label>
Popularity: 12% [?]
December 7th, 2009 joy In c# for panel there no property to set border color directly.We can only set the border style using BorderStyle.
To set the border color of a panel,
Step 1 : Set BorderStyle property to None.
Step 2 : Draw a rectangle and set the pen color in paint event of the panel
private void panelpanelbordercolor1_Paint(object sender, PaintEventArgs e) { e.Graphics.DrawRectangle(Pens.Red, e.ClipRectangle.Left, e.ClipRectangle.Top, e.ClipRectangle.Width - 1, e.ClipRectangle.Height -1); base.OnPaint(e); }
Popularity: 22% [?]
November 30th, 2009 Jaffar Step 1: Download Java – Decompiler from
http://download.cnet.com/windows/3055-2213_4-10046809.html?tag=pdl-redir
Step 2: Install the Java – Decompiler in your PC.
Step 3: Go to All Programs –> DJ Java Decomplier –> DJ Java Decomplier.
Step 4: Select File –> Open then Choose the Class File in File Dialog box.
Step 5: Java File is created from class File.
Popularity: 7% [?]
November 8th, 2009 joy If there is a requirement for calling a button click event from another button in c#, there is a easy way to do.We just need to call the PerformClick Method of the button to be fired.
private void button1_Click(object sender, EventArgs e) { button2.PerformClick(); } private void button2_Click(object sender, EventArgs e) { System.Windows.Forms.MessageBox.Show("I am called from button1"); }
Popularity: 11% [?]
October 31st, 2009 Jaffar
Popularity: 17% [?]
September 28th, 2009 joy Coding :
private void txt_PreviewTextInput(object sender, TextCompositionEventArgs e) { e.Handled = !ValidNumeric(e.Text); base.OnPreviewTextInput(e); } bool ValidNumeric(string str) { bool ret = true; int l = str.Length; for (int i = 0; i < l; i++) { char ch = str[i]; ret &= Char.IsDigit(ch); } return ret; }
Thanks dedjo
Popularity: 8% [?]
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