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c# passing a multi dimension array to a function ***  Cannot apply indexing with [] to an expression of type 'System.Array'

Posted on 2011-09-14
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Last Modified: 2013-12-17
I am passing a multi dim array to a function and then operating on a string that is also passed to the function, to see if the value in the array is found in the passed to string. I cycle through the array and see if the data is found.
I have got this going with the array dimed in the called function, but when i moved the array to the  calling function and then try to pass it to the function then look for the string it throws up an error

Cannot apply indexing with [] to an expression of type 'System.Array'

the code below is the code that i am using, all i need to do is to pass the array, and the string then cycle through the array 1 to 13 and see if the string in the array eg   szTempvals[0,0] is found in the string that was passed.

but the line  if (szTemp.IndexOf(szTempvals[myInt, 0]) != -1) throws up the error

any help would be appreciated

********************************************************************************************

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace WindowsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void rundata_Click(object sender, EventArgs e)
        {
            string[,] szTempvals = new string[14, 3];
            szTempvals[0, 0] = "Type of client:";
            szTempvals[0, 1] = "16";
            szTempvals[1, 0] = "Title:";
            szTempvals[1, 1] = "7";
            szTempvals[2, 0] = "Name:";
            szTempvals[2, 1] = "6";
            szTempvals[3, 0] = "Position:";
            szTempvals[3, 1] = "10";
            szTempvals[4, 0] = "Phone:";
            szTempvals[4, 1] = "7";
            szTempvals[5, 0] = "Website:";
            szTempvals[5, 1] = "9";
            szTempvals[6, 0] = "Int search for:";
            szTempvals[6, 1] = "16";
            szTempvals[7, 0] = "Email:";
            szTempvals[7, 1] = "7";
            szTempvals[8, 0] = "Phone:";
            szTempvals[8, 1] = "7";
            szTempvals[9, 0] = "Int search for:";
            szTempvals[9, 1] = "16";
            szTempvals[10, 0] = "any questions:";
            szTempvals[10, 1] = "16";
            szTempvals[11, 0] = "provide something else:";
            szTempvals[11, 1] = "25";
            szTempvals[12, 0] = "Do you examine:";
            szTempvals[12, 1] = "16";
            string szTemp = "Test data send";
            findStrMatch(szTemp, szTempvals);


        }
        private void findStrMatch(string szTemp, Array szTempvals)
        {
            int myInt = 0;
           
            while (myInt < 13)
            {
                // szTempvals[myInt, 0];
                // MessageBox.Show(szTemp);

                if (szTemp.IndexOf(szTempvals[myInt, 0]) != -1)
                {

                }
            }

        }
    }
}
0
Comment
Question by:sydneyguy
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6 Comments
 
LVL 6

Expert Comment

by:bartvd
ID: 36537752
Change this line:
private void findStrMatch(string szTemp, Array szTempvals)

into this link:

private void findStrMatch(string szTemp, string[,] szTempvals)
0
 
LVL 12

Expert Comment

by:viralypatel
ID: 36537759
you'll probably need to ItemAt() instead of specifying the index to the array.
0
 

Author Comment

by:sydneyguy
ID: 36537802
that works fine but how do i return the array to the calling function please have tried different syntax but throws up a

Cannot implicitly convert type 'System.Array' to 'string[*,*]'. An explicit conversion exists (are you missing a cast?)

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace WindowsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void rundata_Click(object sender, EventArgs e)
        {
            string[,] szTempvals = new string[14, 3];
            szTempvals[0, 0] = "Type of client:";
            szTempvals[0, 1] = "16";
            szTempvals[1, 0] = "Title:";
            szTempvals[1, 1] = "7";
            szTempvals[2, 0] = "Name:";
            szTempvals[2, 1] = "6";
            szTempvals[3, 0] = "Position:";
            szTempvals[3, 1] = "10";
            szTempvals[4, 0] = "Phone:";
            szTempvals[4, 1] = "7";
            szTempvals[5, 0] = "Website:";
            szTempvals[5, 1] = "9";
            szTempvals[6, 0] = "Int search for:";
            szTempvals[6, 1] = "16";
            szTempvals[7, 0] = "Email:";
            szTempvals[7, 1] = "7";
            szTempvals[8, 0] = "Phone:";
            szTempvals[8, 1] = "7";
            szTempvals[9, 0] = "Int search for:";
            szTempvals[9, 1] = "16";
            szTempvals[10, 0] = "any questions:";
            szTempvals[10, 1] = "16";
            szTempvals[11, 0] = "provide something else:";
            szTempvals[11, 1] = "25";
            szTempvals[12, 0] = "Do you examine:";
            szTempvals[12, 1] = "16";
            string szTemp = "Test data send";
           szTempvals = findStrMatch(szTemp, szTempvals);


        }
       // private void findStrMatch(string szTemp, Array szTempvals)
        private Array findStrMatch(string szTemp, string[,] szTempvals)
        {
            int myInt = 0;
           
            while (myInt < 13)
            {
                // szTempvals[myInt, 0];
                // MessageBox.Show(szTemp);

                if (szTemp.IndexOf(szTempvals[myInt, 0]) != -1)
                {
                   
                }
                myInt++;
            }

            return szTempvals;

        }
    }
}
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LVL 16

Accepted Solution

by:
SriVaddadi earned 1000 total points
ID: 36538159
why do you want to use Array object as the function parameter instead use the string[,] as the function parameter as below.

private void findStrMatch(string szTemp, string[,] szTempvals)

This would solve both your indexing and returning issue
0
 
LVL 6

Assisted Solution

by:bartvd
bartvd earned 1000 total points
ID: 36538876
You should replace this line:
private Array findStrMatch(string szTemp, string[,] szTempvals)

with this line:
private string[,] findStrMatch(string szTemp, string[,] szTempvals)
0
 

Author Closing Comment

by:sydneyguy
ID: 36562310
thanks for your answers result was a mixture of 2 answers thanks for your help
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