ASP.NET

foreach (Control control in this.form1.Controls) {
    if (control is TextBox) {
         TextBox textBox = control as TextBox;
         // use textBox here
     }
}

protected void Page_Load(object sender, EventArgs e)
    {
        CreateTextBoxes();
    }
    // This method creates multiple textboxes with values
    public void CreateTextBoxes()
    {
        int Count = 0;
        foreach (DataRow row in dataSetselectactivities.Tables[0].Rows)
        {
            Count += 1;
            lb = new Label();
            tb = new TextBox();
            tb.Id = "txt_" + Count;
            lb.Text = row["field"].ToString();
            tb.Text = row["field"].ToString();
            RequiredFieldValidator reqv = new RequiredFieldValidator();
            reqv.ControlToValidate = tb.Id;
            reqv.ErrorMessage = "Err_Msg";
            TextBoxesHere.Controls.Add(lb);
            TextBoxesHere.Controls.Add(tb);
            TextBoxesHere.Controls.Add(reqv);
        }
        
    }
    //Now if you want to get 5th number textbox values and want to modify //it in database then you have to find out it first.
 
string FifthTexBoxValue = ((TextBox)this.Page.FindControl("txt_5")).Text;

Imran Khan Pathan wrote:

string FifthTexBoxValue = ((TextBox)this.Page.FindControl("txt_5")).Text;

.netman wrote:

but one thing, surely if i dont know how many textboxes there are then i cant do the following

int Count=1;
 foreach (DataRow row in dataSetselectactivities.Tables[0].Rows)
        {
            string textboxValue= ((TextBox)this.Page.FindControl("txt_" + Count.ToString())).Text;  
           Count+=1;
           
           // Do something here
        }