protected void Button1_Click(object sender, EventArgs e)
{
blog b = new blog();

// You could always set TextBox3 Maxlength to 100 and get rid of this if....
if (TextBox3.Text.Length > 100)
{
Label2.Text = "Please enter less than 100 characters, please...";
}
else
{
Label2.Text = "Thanks for sharing...";
b.Insertblog(Textbox1.Text,Textbox2.Text, Textbox3.Text);
}

Textbox1.Text = string.Empty;
Textbox2.Text = string.Empty;
Textbox3.Text = string.Empty;

//I've set maxLength property of first two textboxes set to 20,20
}

Its not working . any idea?

From those TextBoxes I'm inserting data to my XML file (it's in APP_DATA folder). I have two methods[GetBlig() and InsertBlog()] in my blog.cs file and as you see, I created one object instance of blog class and overloading the constructor with the values taken from those TextBoxes.

The link you can check here:

http://aspspider.info/lokhu/Memeber/Default.aspx

vulpes, I've solved the problem from your clue. The TextBoxes are databind(), so I changed the code this way:

string s1;
        string s2;
        string s3;  
    protected void Button1_Click(object sender, EventArgs e)
    {
        string s1 = TextBox1.Text; 
        string s2 = TextBox2.Text; 
        string s3 = TextBox3.Text; 
        blog b = new blog(); 
        if (TextBox3.Text.Length > 100) 
        { 
            Label2.Text = "Please enter less than 100 characters, please..."; 
        } 
        else 
        { 
            Label2.Text = "Thanks for sharing..."; 
            b.Insertblog(s1, s2, s3);             
        } 
  
        //I've set maxLength property of first two textboxes set to 20,20 
        TextBox1.Text = "";
        TextBox2.Text = "";
        TextBox3.Text = "";    
    }