Add Custom event in Web User Control

Customer event is very easy from Web User Controls.

Just 4 steps of code for this!


1) Declare event in the user control

public EventHandler AddNew;

2) Fire that event form user controls event.

if (AddNew != null)
AddNew(sender, e);

(like button click event in that control.)

3) Now asign that event in Page_OnInit event for that control.

protected override void OnInit(EventArgs e)
{
myUserCotrol1.AddNew = new EventHandler(MyNewEventMethod);
}

4) Now wight down that method in which one you declared in page onInit event

protected void MyNewEventMethod (object sender, EventArgs e)
{
//Some code;
//Some code;
}

Done!!!!

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Change Squience Logic

Create PROCEDURE usp_MoveSequence]

@ID int,

@Sequence int,

@MoveBy varChar(4)

AS

BEGIN—PROCEDURE

SET NOCOUNT ON;

DECLARE @compateTo INT

DECLARE @compateToMax INT

DECLARE @currentSequence INT

DECLARE @NextSequence INT

DECLARE @NextRecordID INT

IF @MoveBy='UP'

Select TOP 1 @NextSequence=Sequence, @NextRecordID=ID from TableName where sequence<@Sequence ORDER BY sequence DESC

ELSE IF @MoveBy='DOWN'

Select TOP 1 @NextSequence=Sequence, @NextRecordID=ID from TableName where sequence>@Sequence ORDER BY sequence

--ENDIF

IF @NextRecordID<>0

BEGIN

UPDATE TableName SET Sequence=@NextSequence WHERE ID=@ID

UPDATE TableName SET Sequence=@Sequence WHERE ID=@NextRecordID

END

END--PROCEDURE

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How to add validation to a WebUserControl?

Add validation to WebUserControl, Normally when we click on ControlToVelidate property, it automatically show as all the list of WebControls of that from, But you will not find WebUserControl name there.

Solution is that just write down that WebUserControl name and type "$" sign and write down WebControl name which one is going to validate form that WebUserControl.

for example:

• I created a webusercontrol and there is a textbox in that control.
• I will drag that webusercontrol in my aspx page.
• It's default name will be "WebUserControl1"
• Now I will put a RequiredFieldValidator in my aspx page.
• Then I will write down in ControlToVelidate = "WebUserControl1$TextBox1"

Because "WebUserControl1" is my web control name in my aspx page. and "TextBox1" this the name of that control in that Web User Control.

This is very ease and useful method to validate WebUserControl.

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