how to make visible false a lable on key press in asp.net ?

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Protected Sub LoginButton_Click(ByVal sender As Object, ByVal e As EventArgs) Handles LoginButton.Click
        con.Open()
        cmd.Connection = con
        cmd.Parameters.Add(New SqlClient.SqlParameter("@userName", txtUsername.Text))
        cmd.Parameters.Add(New SqlClient.SqlParameter("@password", txtPassword.Text))
        cmd.CommandText = "SELECT userName,password FROM signUp WHERE userName =@userName AND password =@password COLLATE Latin1_General_CS_AS "

        Dim str As String = cmd.ExecuteScalar
        If str = "" Then
            lblMessage.Visible = True
            txtUsername.Text = ""
        Else
            Response.Redirect("WebForm2.aspx")
        End If
        con.Close()
    End Sub

i wants to
lblMessage.Visible = false
on key press

Posted 12-Feb-14 17:23pm

neeraj_

Updated 12-Feb-14 17:27pm

v2

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Snehasish_Nandy · Accepted Answer · 2014-02-12T17:34:00

Solution 2

You can refer

how-to-make-label-visible-invisible[^]

hide-a-asp-net-label-in-javascript-on-keypress[^]

Posted 12-Feb-14 17:34pm

Snehasish_Nandy

TrushnaK · Accepted Answer · 2014-02-12T18:14:00

try this:-

XML

<script language="javascript" type="text/javascript">
    function hideIt() {
        document.getElementById('<%=myLabel.ClientID%>').style.display = 'none';
    }
</script>

and call from any control as onkeypress="hideLabel()":-

<asp:TextBox ID="txtEmailAddress" runat="server" Width="200px" CssClass="customtxt" onkeypress="hideLabel()"></asp:TextBox>

Refer:-
http://api.jquery.com/keypress/[^]

Gitanjali Singh · Accepted Answer · 2014-02-12T17:33:00

Solution 1

Refer:
http://stackoverflow.com/questions/7774116/javascript-return-false-from-onkeypress-handler[^]
This may help.

Posted 12-Feb-14 17:33pm

Gitanjali Singh

Comments

neeraj_ 12-Feb-14 23:55pm

this not worked
i have solved

function hideLabel(sender, e) {
document.getElementById('<%=lblResult.ClientID%>').style.display = 'none';
}