多次元配列を作成しました:
string[,] array_questions = new string[dt.Rows.Count, dt.Columns.Count];
for (i = 0; i < dt.Rows.Count; i++)
{
for (j = 0; j < dt.Columns.Count; j++)
{
array_questions[i, j] = dt.Rows[i][j].ToString();
//Response.Write(array_questions[i, j]);
}
// Response.Write(Environment.NewLine);
//Response.Write("\n");
}
foreach (string number in array_questions)
{
//Response.Write(number + " ");
//Response.Write(Environment.NewLine);
Response.Write(string.Join(", ", number) + Environment.NewLine);
}
しかし、次のようなエラーが表示されます: エラー 1 The best overloaded method match for 'string.Join(string, string[])' has some invalid arguments.. 助けてください