Client side validation

Rakesh Kalluri

14y3.5k.NET

hi every one ..

i have a text box in user control ..that user control is user control is placed in web page .the web page in master page.i want to write the java script function in master page for validating the text box in user control from web page please clarify my doubt this is my urgent requirement.

Thanks & Regards

K Rakesh

6 Replies

Know the answer? Post it — somebody with the same question will find it here.

Shivanand Arur14y ago
Hey Rakesh, you can do one thing.... Create 1 Javascript Page called as "CommonJavascript.js" and add that function in this Javascript file. Then you can simply link this "CommonJavascript.js" file in any page where you want.

Try it out....

PLEASE MARK THE ANSWER AS ACCEPTED IF IT HELPED YOU!!!
Rakesh Kalluri14y ago
please read this question i have a textbox in user control that user is placed in aspx page i have one master page if i write javascript function in master page for User control textbox is empty or not how can i call the javascipt function from aspx page to maser page for validating the user control page text box validating this is urgent requirement
RanjithKumar chiguruvada14y ago
Here's a example, you can check it:

WebUserControl.ascx:

WebUserControl.ascx.cs:

public partial class WebUserControl1 : System.Web.UI.UserControl
{
protected void Page_Load(object sender, EventArgs e)
{

}

public void SetValidator(bool isValid)
{
this.RegularExpressionValidator1.IsValid = isValid;
}
}

main page.aspx:

main page.aspx.cs:

private string[] CustomControlList { get; set; }

protected void Page_Load(object sender, EventArgs e)
{
CreateCustomControl();
}

protected void CreateCustomControl()
{
int controlCount = 3;
this.CustomControlList = new string[controlCount];
for (int i = 0; i < controlCount; i++)
{
UserControl c = this.LoadControl("~/WebUserControl1.ascx") as UserControl;
c.ID = "UC" + i.ToString();
this.CustomControlList[i] = c.ID;
this.Panel1.Controls.Add(c);
}
Button btn = new Button();
btn.ID = "btnSetValid";
btn.Text = "SetValid";
btn.Click += new EventHandler(btn_Click);
this.Panel1.Controls.Add(btn);
}

protected void btn_Click(object sender, EventArgs e)
{
SetSpecifyCustomControlValidator();
}

private void SetSpecifyCustomControlValidator()
{
int specificControlIndex = this.CustomControlList.Length - 1; //call a specific custom usercontrol
UserControl c = this.FindControl(this.CustomControlList[specificControlIndex]) as UserControl;
if (c != null)
{
System.Reflection.MethodInfo validMethod = c.GetType().GetMethod("SetValidator");
validMethod.Invoke(c, new object[] { true }); //call SetValidator method in this custom control.
}
}

Hope this can help you.
Shivanand Arur14y ago
To check if texttbox is empty or not... You can use a "RequiredFieldValidator" Control...which is something like this...

ErrorMessage="Username is Compulsary" ControlToValidate="txtUsername"
ValidationGroup="BtnLoginClick">

You can even use a RegularExpressionValidator COntrol if you want to validate some user input (eg: Email ID). You can check the Properties panel of this control and assign values to this Control....

Check out for some validation Control in the Toolbox.
Rakesh Kalluri14y ago
any type validation just like text box empty or not
Shivanand Arur14y ago
Hey Rakesh, What Validation do you want to do??? I mean...

is it like the User should only add number value and not any other characters???
Please specify what Validation do you wanna do!!!