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POIssue using switch case statement
 

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  1. POIssue using switch case statement
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    <p>My code is as follows. Basically, I am reading an excel file and storing its contents into an object array. Then, I use a switch case statement to do different operations. Check my code below:-</p> <pre><code> using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Windows.Forms; using System.Data; using System.Drawing; using System.ComponentModel; using Excel = Microsoft.Office.Interop.Excel; using Microsoft.Office.Interop.Excel; namespace Excel1 { class Program { public static void Main(string[] args) //public void ExcelOps() { //string str; Excel.Application xlApp = new Excel.Application(); Excel.Workbook xlWorkbook = xlApp.Workbooks.Open(@"D:/WebServiceTemplate.xlsx"); Excel._Worksheet xlWorksheet = xlWorkbook.Sheets[1]; Excel.Range xlRange = xlWorksheet.UsedRange; int rowCount = xlRange.Rows.Count; int colCount = xlRange.Columns.Count; int numSheets = xlWorkbook.Sheets.Count; // // Iterate through the sheets. They are indexed starting at 1. // for (int sheetNum = 1; sheetNum &lt;=1; sheetNum++) { Worksheet sheet = (Worksheet)xlWorkbook.Sheets[sheetNum]; // // Take the used range of the sheet. Finally, get an object array of all // of the cells in the sheet (their values). // object[,] valueArray = (object[,])xlRange.get_Value(XlRangeValueDataType.xlRangeValueDefault); // // Do something with the data in the array with a custom method. // ProcessInput(valueArray); } } public static void ProcessInput(object[,] valueArray) { foreach (var value in valueArray) { switch ((string)value.ToString()) { case "ITemplate.GetAllTemplate": { //ITemplate.GetAllTemplate break; } case "ITask.GetTaskInstanceFromTemplate": { //ITask.GetTaskInstanceFromTemplate break; } case "CreateTask": { //CreateTask break; } case "UpdateDatabase": { //UpdateDatabase break; } case "GetTaskStatus": { //GetTaskStatus break; } case "VerifyValue": { //VerifyValue } break; } } } } } </code></pre> <p>When I build it, I get an error <strong>Object reference not set to an instance of an object.</strong><br> the error appears in the switch statement</p> <p>Can someone help me with this? </p>
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    1. This table or related slice is empty.
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    1. USHarish Kumar
    1. USHarish Kumar
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    1. This table or related slice is empty.
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    1. COHi. You must pass array element but not whole array.
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      1. POIssue using switch case statement
      1. USSanja Melnichuk
    2. COHave you even tried looking at least MSDN for switch case ?
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      1. USV4Vendetta
    3. COAnd the comments in the cases are the same of the values in excel cells in [this](http://stackoverflow.com/questions/11044835/parsing-an-excel-file-and-reading-a-cell/11045564#11045564) question by [Harish Kumar](http://stackoverflow.com/users/1034945/harish-kumar)...
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      1. POIssue using switch case statement
      1. USFrancesco Baruchelli
 

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