CODEWITHSUNDEEP
c#javascriptasp.net.net
user1782161
user1782161

Reputation: 1

java-script validation on text box for already existing condition

I want to do this type of validation using javascript on text box in asp.net on textchange event of text box below is my code in c# validtaion: 

string str = "Select ReceiptNo from BranchOutwardItems where ReceiptNo='" + txtReceiptNo.Text + "'";

DataTable dt = objGlobalClass.LoadData(str);
if (dt.Rows.Count > 0)
{
     lblMsg.Text = " Receipt ID already exists.Click On ADD for Generate New Receipt ID";
}
else
{
     lblMsg.Text = "Receipt ID doesnot exists";
}

Upvotes: 0

Views: 339

Answers (2)

शेखर
शेखर

Reputation: 17614

For this you will have to call a Page-Method or A Web-Service, Or a Http-Handler to validate the value of the text box.

Here is a similar example
Here too is a good example

Upvotes: 1

Pavan Kumar
Pavan Kumar

Reputation: 190

var tbl = document.getElementById('tblID');
var lbl = document.getElementById('lblID');
if(tbl != null)
{

if(tbl.rows.length > 0)
{
lbl.innerHTML = "Success Message";
}
else 
{
lbl.innerHTML = "Failed Message";

}

}

Upvotes: 0

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