How to validate textbox inside gridview control using update/insert button clicking?

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Dear sir,

Please tell me how to validate textbox control inside the gridview control using onclinetClick() event in javascript.

Ex:
Source code:

XML

<asp:gridview id="grdmenu" runat="server"><FooterTemplate>                                                                                <asp:TextBox ID="txtbox" runat="server"  TextMode="MultiLine">
</asp:TextBox>
   </FooterTemplate>

<asp:TemplateField HeaderText="Edit">
<EditItemTemplate>
<asp:ImageButton ID="btnMenuUpdate" runat="server" OnClientClick="return val();"
Text="Update"/>
</EditItemTemplate>
</asp:TemplateField
>

javascript Code:

Quote:

function val()
{
debugger;
var strin = document.getElementById(<%= txtbox.ClientID%>").value;
}

but it will raising error? "The name 'txtbox' does not exist in the current context
"
I dont know what is the error, please how to get txtbox value to strin give me code..

Please reply me

By mohan

Posted 19-Feb-12 22:24pm

Mohankumar.Engain

Updated 19-Feb-12 22:30pm

v2

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Comments

Nilesh Patil Kolhapur 20-Feb-12 4:49am

are you used master page?

4 solutions

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Nilesh Patil Kolhapur · Answer 1 · 2012-02-19T22:52:00

Solution 1

Hey,

Correct Your code there is some syntax error
or replace your code by following
document.getElementById("<%= txtbox.ClientID%>").value;
best luck

Posted 19-Feb-12 22:52pm

Nilesh Patil Kolhapur

Abhi KA · Answer 2 · 2012-02-19T22:54:00

Solution 2

pass parameter to function val()
and call that function in inside gridview with parameter

<asp:textbox id="txtbox" runat="server" textmode="MultiLine" xmlns:asp="#unknown">

Posted 19-Feb-12 22:54pm

Abhi KA

Comments

Member 10290905 7-Jan-14 23:35pm

how to validate textbox inside gridview in asp.net pls help me
thanks

Sarvesh Kumar Gupta · Answer 3 · 2012-02-19T22:58:00

Hi, not use OnClientClick="return val();"

Use below code:

at rowdatabound event, find control for Button and text box.

then write

C#

button1.attributes.Add("onclick", "javascript:return val('"+txtBx.ClientID+"');");

now, in the JS function, insert one parameter in your function.

JavaScript

function val(txtBx)
{
txtBxObj = document.getElementById(txtBx);
if(txtBxObj.value =="")
{
//alert
return false;
}
}

and check value of textbox.

Sanjay K. Gupta · Answer 4 · 2012-02-20T00:00:00

Solution 4

C#

var grid=document.getElementById('<%=yourGridID.ClientID%>');
var theTextBoxvalue=grid.rows[1].cells[yourcellIndex].children[0].value;
if(theTextBoxvalue!='')
{
    //go further
}
else
{
    alert('enter text please');
}

Posted 20-Feb-12 0:00am

Sanjay K. Gupta