Index Outside the Bounds of the Array

[jasonsalas]

Hi everyone,

I'm trying to develop a control that will allow a page developer to use their own XML documents to populate a page's contents. As such, I'm trying to have the size and contents of an array populated dynamically, as opposed to hard-coded.

In the GetArrayContents method below, I'm trying to read the DataColumns from a DataTable and write a string value to be read by the ReadSlides method to populate a jagged array, but I keep getting a "Index Outside the Bounds of the Array" error. I thought this would be OK, but apparently not.

// set a jagged array of images & captions to use by reading data from an XML file
private string[][] ReadSlides(string filepath)
{
FileStream fs = new FileStream(filepath,FileMode.Open,FileAccess.Read);
StreamReader sr = new StreamReader(fs);
DataSet ds = new DataSet();

ds.ReadXml(sr);
fs.Close();

DataTable table = ds.Tables[0];
DataRow[] rows = table.Select();

string[][] contents = new string[rows.Length][];
for(int i=0;i<rows.Length;i++)
{
// contents = new string[] { rows[&quot;image&quot;].ToString(),rows[&quot;alt&quot;].ToString(),rows[&quot;title&quot;].ToString(),rows[&quot;caption&quot;].ToString() };
contents = new string[] { GetArrayContents(table) };
}

return contents;
}

// helper method that automates the population of the jagged array
private string GetArrayContents(DataTable table)
{
string arrayContents = string.Empty;

foreach(DataColumn col in table.Columns)
{
arrayContents += &quot;rows[\&quot;&quot; + col.ColumnName + &quot;\&quot;].ToString(),&quot;;
}

return arrayContents;
}

Thanks!

 

[JohnYingling]

Arrays start at 0 so I am guessing that
new string[rows.Length][]
should be
new string[rows.Length-1][]

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[jasonsalas]

HI John,

Good thought...but nada. Same thing.

 

[jasonsalas]

Hi John,

FYI...I got it wotking...I had to return a string array in my private helper method:

////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////
for(int i=0;i<rows.Length;i++)
{
contents = GetArrayContents(i,table,rows);
}

private string[] GetArrayContents(int rowNumber,DataTable table,DataRow[]
rows)
{
string[] arrayContents = new string[table.Columns.Count];
int incrementer = 0;

for(int i=0;i<table.Columns.Count;i++)
{
arrayContents.SetValue(rows[rowNumber].ToString(),i);
incrementer++;
}
return arrayContents;
}

Jason