CODEWITHSUNDEEP
c#stringurlbuttonuri
Sauced Apples
Sauced Apples

Reputation: 1173

Button Click URL + String

I am trying to have a click event navigate the webBrowser to a pre-set location + string but I can't seem to get it to work.

My biggest issue is maybe getting the string from one event to the click event?

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Data.OleDb;

namespace Ink
{
    public partial class inkForm : Form
    {

        public inkForm()
        {
            InitializeComponent();
        }

        string searchlink;

        private void searchbutton_Click(object sender, EventArgs e)
        {
            this.AcceptButton = searchbutton;

            int itemrow = -1;
            String searchValue = searchtextBox.Text.ToUpper();

            if (searchValue != null && searchValue != "")
            {
                foreach (DataGridViewRow row in inkGridView.Rows)
                {
                    if (row.Cells[1].Value.ToString().Equals(searchValue))
                    {
                        itemrow = row.Index;
                        break;
                    }
                    else if (row.Cells[1].Value.ToString().Contains(searchValue) && itemrow == -1)
                    {
                        itemrow = row.Index;
                    }
                }
                if (itemrow == -1)
                {
                    searchtextBox.BackColor = Color.Red;
                }
                else
                {
                    searchtextBox.BackColor = Color.White;
                    inkGridView.Rows[itemrow].Selected = true;
                    inkGridView.FirstDisplayedScrollingRowIndex = itemrow;
                }
            }
        }

        private void inkForm_Load(object sender, EventArgs e)
        {
            this.hPTableAdapter.Fill(this.inkDataSet.HP);

        }

        private void updatebutton_Click(object sender, EventArgs e)
        {
            DialogResult dr = MessageBox.Show("Are you sure you want to update the stock level?", "Message", MessageBoxButtons.YesNoCancel, MessageBoxIcon.Information);
            if (dr == DialogResult.Yes)
            {
                this.hPTableAdapter.Update(inkDataSet.HP);
                inkGridView.Refresh();
                MessageBox.Show("Record Updated.", "Success!");
            }

        }
        private void inkGridView_CellContentClick(object sender, DataGridViewCellEventArgs e)
        {
            inkGridView.Columns["tonerInkDataGridViewTextBoxColumn"].ReadOnly = true;
        }

        private void inkGridView_SelectionChanged(object sender, EventArgs e)
        {
            if (inkGridView.SelectedCells.Count > 0)
            {
                int selectedrowindex = inkGridView.SelectedCells[0].RowIndex;

                DataGridViewRow selectedRow = inkGridView.Rows[selectedrowindex];

                string searchlink = Convert.ToString(selectedRow.Cells["tonerInkDataGridViewTextBoxColumn"].Value);
            }
        }

        private void orderbutton_Click(object sender, EventArgs e)
        {
            string link;
            string searchlink = "blahblah";
            link = "http://store.tindallsb2b.co.uk/storefront/evolution_ProductResults.html?strSearch=" + searchlink;
            webBrowser.Url = new Uri(link);

        }

        private void urlcheckertextbox_TextChanged(object sender, EventArgs e)
        {
            urlcheckertextbox.Text = webBrowser.Url.ToString();
        }
    }
}

When button is clicked, it navigates the domain to a "unknown location" page on the website (The website is not owned by me).

The idea is to click the cell in the DataGridView which is a product code, then click the button which adds the product code to the set url and loads the url+string in the webBrowser.

Upvotes: 0

Views: 1306

Answers (1)

Jibbow
Jibbow

Reputation: 757

Your vairable searchlink isn't visible to your orderbutton_Click(). A solution would be to declare the varible searchlink outside of the methods in your class. In fact you are using completely different variables (both named searchlink) inside your methods. So for example:

class testclass
{
     string teststring1 = ""; //visible in both methods

     private void testmethod1()
     {
         string teststring2 = ""; //only visible in this method
         teststring1 = "it works!";
     }

     private void testmethod2()
     {
         teststring2 = "this won't compile"; //teststring2 is not visible here
         teststring1 = "it works, too";

         //but what you are doing is:
         string teststring2 = ""; //new variable (not related to teststring2 from above)
     }
}

And as bkribbs told me this is called a variable scope. Thanks!

For solving your specific problem here is the new code:

string searchlink = "";

private void inkGridView_SelectionChanged(object sender, EventArgs e)
    {
        if (inkGridView.SelectedCells.Count > 0)
        {
            int selectedrowindex = inkGridView.SelectedCells[0].RowIndex;

            DataGridViewRow selectedRow = inkGridView.Rows[selectedrowindex];

            searchlink = Convert.ToString(selectedRow.Cells["tonerInkDataGridViewTextBoxColumn"].Value);
        }
    }

    private void orderbutton_Click(object sender, EventArgs e)
    {
        string link;

        link = "http://store.tindallsb2b.co.uk/storefront/evolution_ProductResults.html?strSearch=" + searchlink;
        webBrowser.Url = new Uri(link);

    }

I hope I got your problem right :)

Upvotes: 2

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