Develop Reference

OpenQA.Selenium.ElementNotVisibleException:Element is not currently visible and so may not be interacted with

I am trying to call a method using if..else. Below is the C# code from which i am trying to send a string country to get selected from dropdown. I expect method WePay() to get called. But getting the element not visible exception.
String country = "United States - US Dollars ($)";
new SelectElement(wd.FindElement(By.Id("CountrySelector"))).SelectByText(country);
if (country != "United States - US Dollars ($)")
{
PayPal();
}
else
{
WePay();
}
Below is the C# code for method WePay()
public void WePay()
{
wd.FindElement(By.XPath("//button[#onclick='ValidateSubmit()']")).Click();
wd.FindElement(By.Id("addAmount")).Click();
wd.FindElement(By.Id("addAmount")).SendKeys("10");
wd.FindElement(By.XPath("//button[#onclick='PayNow();']")).Click();
wd.FindElement(By.Id("new-cc")).Click();
new SelectElement(wd.FindElement(By.Id("Card_TransactionTypeId"))).SelectByText("Visa");
wd.FindElement(By.Id("Number")).SendKeys("4003830171874018");
wd.FindElement(By.Id("CVV")).SendKeys("527");
new SelectElement(wd.FindElement(By.Id("Card_ExpirationMonth"))).SelectByText("10");
new SelectElement(wd.FindElement(By.Id("Card_ExpirationYear"))).SelectByText("2020");
wd.FindElement(By.Id("saved-address")).Click();
new SelectElement(wd.FindElement(By.Id("AddressSelector"))).SelectByValue("69918");
wd.FindElement(By.Id("submitButton")).Click();
}

We can help you better, if you let us know what error message you are getting, and where exactly in the code you are getting the error.
I am just reframing your code below in Java:
String country = "United States - US Dollars ($)";
Select select=new Select(wd.FindElement(By.Id("CountrySelector"))
select.selectByVisibleText(country); //Here selects the country
//Now to cross check, get the value which is selected by below statement.
String returnSelectedCountry=select.getFirstSelectedOption(); //This will actually fetch the value from the listbox
if(!country.equals(returnSelectedCountry)) //Comparing the string var with actual val selected
PayPal();
else
WePay();

In my experience I had two solutions for this:
Use Wait, when interacting with elements especially when navigating through different pages. Most of the times JS is trying to interact with the HTML element before it has been loaded. In this case I extended the Selenium Wait with my own method that for given time checked/waited for the element condition.
When using Chrome/IE drivers keep in mind that some elements even load and present can't be handled properly. In my case Finish and Go Back buttons were at the bottom of the visible part of the screen and I had to use scroll-down option in order to interact with them.
Hope it helps.

DataGridView returns rows without data

I have a an issue in my windows application project, a very small one I'm afraid which for some reason I can't get a hang of the solution.
I want to display data in a Data grid programmatically, but it returns only the rows based on the number of records fetched from the database WITHOUT Data in it. Below is my code
private void BindDataToGrid()
{
var teller = new TellerService().GetByUsername(username);
var transactions = new PocTransactionService().GetByTellerId(teller.TellerId);
BindingList<PocTransaction> trans = new BindingList<PocTransaction>(transactions);
var source = new BindingSource(trans, null);
dgvTransactions.DataSource = source;
}
Not that the variable transactions gets populated in the code, but for some reason, it's not displaying on grid. It's really driving me nuts. I trust one of you here to show me the way out.

I finally figured it out. There is nothing wrong with the code I wrote in the first place. I just didn't set the DataPropertyName for each of the columns I defined on the grid. Setting them appropriately to the datasource property gave my the desired result.
All thanks to Gabriel for his help so far. I appreciate.

Get values from database to textbox

I have a WinForm that have a DataGridView and a ComboBox, allowing users to select a subject (from the database).
cbxSubject.DataSource = dsSched.Tables["Schedules"];
cbxSubject.DisplayMember = "Subject";
...
The DataGridView looks something like this: http://i45.tinypic.com/18gmmu.png I added the DataGridView since I don't know any other way how to get those values from the database. I used a code, something like this, to get the values:
TextBox1.Text = DataGridView1.Rows[3].Cells[1].Value.ToString();
But then I realized that it won't work anymore if there are more than 2 subjects to choose from, because the code is set to get the value on the 3rd row and the 1st cell. So even when the user changed subject, the output value (w/c are then displayed in a TextBox) will still be the same. Are there any other ways to get those values? Please help, thanks.

You can add a comboxbox this way
DataGridViewComboBoxColumn subjectsCombo = new DataGridViewComboBoxColumn();
subjectsCombo.DataPropertyName = "SubjectID";
subjectsCombo.HeaderText = "Subjects";
subjectsCombo.DataSource = dsSched.Tables["Subjects"];
subjectsCombo.ValueMember = "SubjectID";
subjectsCombo.DisplayMember = "SubjectText";
cbxSubject.Columns.Add(subjectsCombo);

I would suggest that you DONT use constants. Rather that using 3 and 1, you need to write some code to find R and C from what the user selects. It should be event driven and you need to re-set the text box on change. I'm assuming you are using an on-change event, but you haven't actually given us that information yet.
here's some pseudocode to get where im going with this
public DataGridView1_SelectionChanged(object sender, ChangedEventArgs e)
{//this might not be the right event, I'll leave it up to you to do your own homework
int R = //Get the current Selected Row;
int C = //Get the current Selected Cell/column;
TextBox1.Text = dsSched.Tables["Schedules"].Rows[R].Cells[C];
///OR YOU COULD DO SOMETHING LIKE THIS
TextBox1.Text = ((DataGridView)sender).SelectedRows[0].Cells[1].Value;
}
//Please note, this is only pseudocode, I dont like doing peoples homework for them.
This should give you a more generic idea/algorithm that you would need. Keeping in mind that this might not even be the best way to go about doing this, but Its what I would recommend based solely on the information provided to us thus far. btw, what have you tried? and can you give us some larger code examples, there might be a rather more simple mistake being made that you haven't shown us so we cant tell you about it :-)
Considering that you still haven't actually asked the correct question, because we dont know WHY you are trying to do what you have stated you are doing, I can't get any more specific than this. GIGO, you have to ask the right question in order to get the right answer.

I'll try to get some of your doubts out of the way:
I added the DataGridView since I don't know any other way how to get
those values from the database
You already have a DataSet called "dsSched" filled with database values. So, no, you don't need the DataGridView. Just fill whatever you want directly from the DataSet:
string data = dsSched.Tables["Schedules"].Rows[3].Cells[1].Value.ToString();
then I realized that it won't work anymore if there are more than
2 subjects to choose from, because the code is set to get the value on
the 3rd row and the 1st cell.
Well, I'm not sure where you are running that piece of code (TextBox1.Text = Data...), but if you are running it on the SelectedIndexChanged event of the DataGridView, then you should get data from the exact row that the user selected (or something, again, I did not understood what you are trying to do).
One thing that I suspect is that you are under the impression that the code:
TextBox1.Text = DataGridView1.Rows[3].Cells[1].Value.ToString();
...is binding the textbox to the value in the row / cell. That's not how this works - the value is retrieved once when the code is run, and then again whenever the code is run again. So you should make sure the code is run when you have to get this value.
EDIT:
I mean, how do I get the value? Like, the PrimaryKey or something?
That's the question! I'm sorry, I was probably deviating. Just set the [ValueMember][1] to the string that describes the value column of the dataset.
cbxSubject.ValueMember = "Schedule ID";
Than you access it using [SelectedValue][2], like:
int selValue = (int)(cbxSubject.SelectedValue);

DataGridView Null Reference Exception

I have a webservice which populates my DataGridView using a couple of webmethods.
Without this code everything works great but I need the picture to change depending on the row selected and the name of the picture will be in a static column that will not change.
What I am trying to do is, in my webmethod, send it a picture name equal to picture1.jpg.
In the windows application I am using this code:
int i;
i = memdataGV.SelectedCells[0].RowIndex;
var pictext = memdataGV.Rows[i].Cells[5].Value.ToString();
pictureBox1.ImageLocation = "C:\\Pictures\\" + pictext;
When the DataGridView first populates everything works fine but when I click on one of my button events it throws an exception on the following line:
var pictext = memdataGV.Rows[i].Cells[5].Value.ToString();
NullReferenceException was unhandled
I tried to debug the code and I added the if statement to the top however does not seem to fix it.

Three possibilities:
i has an incorrect value (-1, for example)
Value at Cells[5] is NULL so when you call ToString() blows up.
Cells[5] does not exist. I.E. maybe it's another index, like 4, for example. The index is zero-based, remember.
Based on your comment, change your line to:
var pictext = memdataGV.Rows[i].Cells[5].Value==null?string.empty:memdataGV.Rows[i].Cells[5].V‌​alue.ToString();

Figured it out for some reason the index 5 was returning null and there was a value in the cell. So I did code to grab the value by the column name which found the value and is working
string pictext = Convert.ToString(selectedRow.Cells["PHOTOID"].Value)

List<>.Find(delegate) issue

I have a multi-column combobox where the datasource is a List<> in my Select Class
Select selection = new Select();
RadComboBox1.DataSource = selection.GetAcctUtilCo(e.Text, 10).Skip(e.NumberOfItems);
I have a few DataTextFields. My DataValueField is the AcctID.
Once an account is selected, I need the datatextfield values to populate some fields in a gridview.
I am trying to use the .Find() method by AcctID to retreive the data without success:(
int AcctID = Convert.ToInt32(RadComboBox1.SelectedValue); // *
List<Select> mylist = RadComboBox1.DataSource as List<Select>;
mylist.Find(delegate(SelectTop act) { return act.AcctID == acctID; }); // ** exception here
Label lblAcctNo = (Label)grdAccts.HeaderRow.FindControl("lblAcctNo");
lblAcctNo.Text = mylist.AccountNum;
When I debug, I get 'Object reference not set to the instance of an object' on the indicated line.
AcctID is NOT null when I hover over it. However when I hover over mylist, it says null.
I'm new with the .Find method & I'm really not sure if the problem is with that or with using the datasource of the combobox as mylist source.
Can someone please help enlighten me

Your combo-box's data source is not a list. When you use "as" the result is null if you try to cast to an invalid type, instead of throwing an exception like a standard cast. Since you used the Skip function to create your data source you actually have an "IEnumerable<>".

The problem is caused by RadComboBox1.DataSource - it is not persisted between page requests.
In your code that sets RadComboBox1.DataSource, save a copy of the RadComboBox1.DataSource value in the viewstate. eg. ViewState["RadComboBox1"] = RadComboBox1.DataSource;
In the event that runs your above code, restore the RadComboBox1.DataSource by reading the value from the viewstate. eg. RadComboBox1.DataSource = ViewState["RadComboBox1"];
You should hopefully find the values then persist between requests. Good luck!