how to validate page (page.isvalid) in asp.net

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hi all!,

i have using on client side validation with and using the buton click event

VB

Page.Validate("Register")
            If Page.IsValid Then
'-------------code
endif

but it is not vlid it show page.IsValild is false.

Posted 16-Apr-12 2:50am

DINESH K MAURYA

Updated 2-Nov-19 2:17am

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ZurdoDev 16-Apr-12 16:12pm

So, what is the question?

DINESH K MAURYA 17-Apr-12 0:43am

my question is how to validate true in server side.
because my validation is false as i show in code(page.IsValid)
how to validation true here...

2 solutions

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renatoinline · Answer 1 · 2012-04-16T14:18:00

Solution 1

are you using validations controls, right? this controls first try to validate on client side, so, event will be fired only if is valid or if js is disabled on client bronwser. On code behind you need to verify manually.

ASP.NET

<div>
        <asp:textbox id="TextBox1" runat="server" xmlns:asp="#unknown"></asp:textbox>
        <asp:requiredfieldvalidator xmlns:asp="#unknown">
        ID="rfv1" runat="server" ErrorMessage="*" ControlToValidate="TextBox1">
        </asp:requiredfieldvalidator>
        <br />
        <asp:button id="Button1" runat="server" text="Button" xmlns:asp="#unknown" />
        <br />
        <asp:literal id="Literal1" runat="server" xmlns:asp="#unknown"></asp:literal>
    </div>

code behind:

C#

void Button1_Click(object sender, EventArgs e)
    {
        Page.Validate();
        if (Page.IsValid)
        {
            Literal1.Text = "valid";
        }
        else
        {
            Literal1.Text = "not valid";
        }
        
    }

Posted 16-Apr-12 14:18pm

renatoinline

Comments

DINESH K MAURYA 17-Apr-12 0:49am

thank for..
but i use ValidationGroup for many clintside control as two three textbox.

<td align="left" valign="top" width="25%">
<asp:TextBox runat="server" ID="txtEmailID" Width="50%" MaxLength="50" onpaste="return false"
oncopy="return false" oncut="return false" CssClass="unwatermarked">
<asp:RequiredFieldValidator ID="rfvTxtEmail" runat="server" ControlToValidate="txtEmailID"
ValidationGroup="Register" ErrorMessage="Required Field Missing<br />Please type your Email ID"
Display="None" />
</td>

second text

<td align="left" valign="top" width="25%">
<asp:TextBox runat="server" ID="txtPSWD" MaxLength="30" TextMode="Password" onpaste="return false"
oncopy="return false" oncut="return false" Width="50%" CssClass="unwatermarked">
<cc1:TextBoxWatermarkExtender ID="tbwPasword" runat="server" TargetControlID="txtPSWD"
WatermarkText="....." WatermarkCssClass="watermarked">

<asp:RequiredFieldValidator ID="rfvPassword" runat="server" ErrorMessage="Required Field Missing<br/>Please type Password"
Display="None" ControlToValidate="txtPSWD" SetFocusOnError="True" ValidationGroup="Register">
</td>

<td align="right" width="35%">
<asp:Button ID="btnRegester" runat="server" Text="Save" ValidationGroup="Register"
CausesValidation="true" Height="30px" Width="90px" CssClass="savebutton" />
</td>

i use button click event validation in serverside.
Please how to solve it,...

sayadian 13-Feb-16 6:52am

hg

PJ003 · Answer 2 · 2012-04-17T04:42:00

C#

<asp:CustomValidator ID="cusValChecks" runat="server" Display="None" OnServerValidate="cusValChecks_ServerValidate"></asp:CustomValidator>


protected void cusValChecks_ServerValidate()
{
    IsValid = true;

    if (txtName.Text.Trim() == "")
            {
                lblError.Text = "Invalid";
                IsValid = false;
            }
}


void Button1_Click(object sender, EventArgs e)
{
    if (!Page.IsValid)
            {
                return;
            }
}