Selenium C# Error while reading data from Excel for data driven testing

Question

I am trying to perform Data driven testing by loading client codes from Excel file to login and perform other operation.I am trying to iterate my test for all clients in the client_code column. I only need to read client_code column and get data to repeat same test with those clients. I am getting Null value when I run below code

Any help with this would be much appreciated thank you.

I am using ExcelDataReader v3.4.0, ExcelDataReader.DataSet v3.4.0, selenium Webdriver v3.11.0

My Excel table looks like below.

 client_code client_name 11111 Client1 22222 Client2 33333 Client3 44444 Client4 55555 Client5 

This is my code:

ExcelUtil.cs

 using ExcelDataReader; using System; using System.Collections.Generic; using System.Data; using System.IO; using System.Linq; using System.Runtime.Remoting.Messaging; using System.Text; using System.Threading.Tasks; namespace MyDemoAutomation { public class ExcelUtil { public DataTable ExcelToDatable(string fileName) { // open file and returns as stream FileStream stream = File.Open(fileName, FileMode.Open, FileAccess.Read); // create openXmlReader via ExcelReaderFactory IExcelDataReader excelReader = ExcelReaderFactory.CreateOpenXmlReader(stream); //Set the first row as column name var result1 = excelReader.AsDataSet(new ExcelDataSetConfiguration() { ConfigureDataTable = (_) => new ExcelDataTableConfiguration() { UseHeaderRow = true } }); // Return as dataset DataSet result = excelReader.AsDataSet(); // Get all tables DataTableCollection table = result.Tables; // Store in Database DataTable resultTable = table["Sheet1"]; // return return resultTable; } List<DataCollection> dataCol = new List<DataCollection>(); public void PopulateInCollection(string fileName) { DataTable table = ExcelToDatable(fileName); for (int row = 1; row <= table.Rows.Count; row++) { for (int col = 0; col < table.Columns.Count; col++) { DataCollection dtTable = new DataCollection() { rowNumber = row, colName = table.Columns[col].ColumnName, colValue = table.Rows[row - 1][col].ToString() }; dataCol.Add(dtTable); } } } public string ReadData(int rowNumber, string columnName) { try { // Retriving data using LINQ to reduce much of iterations string data = (from colData in dataCol where colData.colName == columnName && colData.rowNumber == rowNumber select colData.colValue).SingleOrDefault(); return data.ToString(); } catch (Exception e) { return null; } } internal class DataCollection { public int rowNumber { get; internal set; } public string colName { get; internal set; } public string colValue { get; internal set; } } } } 

Test Class :

  [Test] public void DataDrivenTest_FromExcel() { Driver = new ChromeDriver(); ExcelUtil util = new ExcelUtil(); util.PopulateInCollection(@"C:\\dan\\AutomationTest\\TestData\\test.xlsx"); Driver.FindElement(By.Id("contentPlaceholder_txtClientCode")).SendKeys(util.ReadData(i)); Driver.FindElement(By.XPath("//*[@id='btnLogin']")).Click(); Driver.FindElement(By.XPath("//*[@id='tabContent0']/table/tbody/tr[2]/td[1]")).Click(); Driver.FindElement(By.Id("contentPlaceholder_txtcloseButton")).Click(); Driver.Quit } 

Answer 1

you can:

READ EXCEL FILE:

class ExcelReader
 {
 public List<TestCaseData> ReadExcelData(string excelFile, string sheetname)
 {
    string cmdText = "SELECT * FROM [" + sheetname+ "$]";

    if (!File.Exists(excelFile))
        throw new Exception(string.Format("File name: {0}", excelFile), new 
    FileNotFoundException());

    string connectionStr = 
     string.Format("Provider=Microsoft.ACE.OLEDB.12.0;Data Source={0};Extended Properties=\"Excel 12.0 Xml;HDR=YES\";", excelFile);
    var ret = new List<TestCaseData>();
    using (var connection = new OleDbConnection(connectionStr))
    {
        connection.Open();
        var command = new OleDbCommand(cmdText, connection);
        var reader = command.ExecuteReader();
        if (reader == null)
            throw new Exception(string.Format("No data return from file, 
        file name:{0}", excelFile));
        while (reader.Read())
        {
            var row = new List<string>();
            var feildCnt = reader.FieldCount;
            for (var i = 0; i < feildCnt; i++)
                row.Add(reader.GetValue(i).ToString());
            ret.Add(new TestCaseData(row.ToArray()));
        }
    }
    return ret;
}

Your test case will remain like this:

      [TestFixture]
class TC_1
{

  public static IEnumerable<TestCaseData> BudgetData
    {
        get
        {
            List<TestCaseData> testCaseDataList = new ExcelReader().ReadExcelData(//path//document.xlsx",
                "SheetName");
            if (testCaseDataList != null)
                foreach (TestCaseData testCaseData in testCaseDataList)
                    yield return testCaseData;
        }
    }


    [Test]     
    [TestCaseSource(typeof(TC_1), "BudgetData")]
    public void TestCase1(string attribbutte1, string .....)
    {
     ........................................

NOTE: You need to install the reference "Acces Database Engine" to Read Excel Files

NOTE2: by default the first row will be of titles, for each new row the TC will be executed

the same code is executed 5 times changing the data

Answer 2

Hi @Miguel D'Alessio I tried running the code you provided. Below is the exact copy paste code which I am running with error. Thank you.

ExcelReader Class:

 namespace Automation { class ExcelReader { public List<TestCaseData> ReadExcelData(string excelFile, string sheetname) { string cmdText = "SELECT * FROM [" + sheetname + "$]"; if (!File.Exists(excelFile)) throw new Exception(string.Format("File name: {0}", excelFile), new FileNotFoundException()); string connectionStr = string.Format("Provider=Microsoft.ACE.OLEDB.12.0;Data Source={0};Extended Properties=\\"Excel 12.0 Xml;HDR=YES\\";", excelFile); var ret = new List<TestCaseData>(); using (var connection = new OleDbConnection(connectionStr)) { connection.Open(); var command = new OleDbCommand(cmdText, connection); var reader = command.ExecuteReader(); if (reader == null) throw new Exception(string.Format("No data return from file, file name:{ 0 }", excelFile)); while (reader.Read()) { var row = new List<string>(); var feildCnt = reader.FieldCount; for (var i = 0; i < feildCnt; i++) row.Add(reader.GetValue(i).ToString()); ret.Add(new TestCaseData(row.ToArray())); } } return ret; } } } 

Test Class :

 namespace Automation { [TestFixture] class Excel_TC_1 { private readonly string testCaseData; public static IEnumerable<TestCaseData> BudgetData { get { List<TestCaseData> testCaseDataList = new ExcelReader().ReadExcelData(@"C:\\Safety_dan\\AutomationTest\\TestData\\test.xlsx", "Sheet1"); if (testCaseDataList != null) foreach (TestCaseData testCaseData in testCaseDataList) yield return testCaseData; } } [Test] [TestCaseSource(typeof(Excel_TC_1), "BudgetData")] public void TestCase1(string attribbutte1) { // Login CcLoginPageObject ccPageLogin = new CcLoginPageObject(); ClientLoginPageObject clientLoginPage = new ClientLoginPageObject(); ccPageLogin.Login("username", "password"); // Loading client code: Driver.FindElement(By.Id("ClientsSearch")).SendKeys(testCaseData); } } } 

Error:

 Test Name: TestCase1 Test FullName: Automation.Excel_TC_1.TestCase1 Test Source: C:\\Safety_dan\\-localRepoVisualStudioC#\\Automation\\Excel_TC_1.cs : line 32 Test Outcome: Failed Test Duration: 0:00:00.005 Result StackTrace: at System.Data.OleDb.OleDbServicesWrapper.GetDataSource(OleDbConnectionString constr, DataSourceWrapper& datasrcWrapper) at System.Data.OleDb.OleDbConnectionInternal..ctor(OleDbConnectionString constr, OleDbConnection connection) at System.Data.OleDb.OleDbConnectionFactory.CreateConnection(DbConnectionOptions options, DbConnectionPoolKey poolKey, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningObject) at System.Data.ProviderBase.DbConnectionFactory.CreateConnection(DbConnectionOptions options, DbConnectionPoolKey poolKey, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection, DbConnectionOptions userOptions) at System.Data.ProviderBase.DbConnectionFactory.CreateNonPooledConnection(DbConnection owningConnection, DbConnectionPoolGroup poolGroup, DbConnectionOptions userOptions) at System.Data.ProviderBase.DbConnectionFactory.TryGetConnection(DbConnection owningConnection, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal oldConnection, DbConnectionInternal& connection) at System.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions) at System.Data.ProviderBase.DbConnectionClosed.TryOpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions) at System.Data.ProviderBase.DbConnectionInternal.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) at System.Data.OleDb.OleDbConnection.Open() at Automation.ExcelReader.ReadExcelData(String excelFile, String sheetname) in C:\\Safety_dan\\-localRepoVisualStudioC#\\Automation\\Excel_TC_1.cs:line 27 at Automation.Excel_TC_1.<get_BudgetData>d__2.MoveNext() in C:\\Safety_dan\\-localRepoVisualStudioC#\\Automation\\Excel_TC_1.cs:line 20 at NUnit.Framework.TestCaseSourceAttribute.GetTestCasesFor(IMethodInfo method) in C:\\src\\nunit\\nunit\\src\\NUnitFramework\\framework\\Attributes\\TestCaseSourceAttribute.cs:line 177 Result Message: System.InvalidOperationException : The 'Microsoft.ACE.OLEDB.12.0' provider is not registered on the local machine.