How to Remove Loop using linq

[Sanjay8090]

I have some code and i want to remove foreach loop from my code in linq any possible way ?? please suggest me those way or salution

thanks

static public string table2Json(DataSet ds, int table_no)
{
try
{
object[][] tb = new object[ds.Tables[table_no].Rows.Count][];
int r = 0;
foreach (DataRow dr in ds.Tables[table_no].Rows)
{
tb[r] = new object[ds.Tables[table_no].Columns.Count];
int col = 0;
foreach (DataColumn column in ds.Tables[table_no].Columns)
{
tb[r][col] = dr[col];
if ((tb[r][col]).Equals(System.DBNull.Value))
{
tb[r][col] = "";
}
col++;
}
r++;
}
string table = JsonConvert.SerializeObject(tb, Formatting.Indented);
return table;
}
catch (Exception ex)
{
tools.log(ex.Message);
throw ex;
}
}

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