[英]how can i read a DataTable from javascript
我有一個返回DataTable的函數,如下所示:
public DataTable SendOnlineContacts()
{
...
for (int i = 0; i < FriendsDt.Rows.Count; i++)
{
int FriendID = Convert.ToInt16(FriendsDt.Rows[i][0]);
DataRow[] FriendisOnlineRow = ConnectedClientDt.Select("ClientID=" + FriendID);
if (FriendisOnlineRow.Length > 0) // friend is online
{
// new SQLHelper(SQLHelper.ConnectionStrings.WebSiteConnectionString).Update("Update clients set USER_STATUS='O' where CLIENT_ID=" + FriendsDt.Rows[i][0]);
FriendsInfo.Rows.Add(FriendsDt.Rows[i][0] + "," + FriendsDt.Rows[i][1] + "," + FriendsDt.Rows[i][2] + "," + "O");
}
}
return FriendsInfo;
}
客戶端 :
$.ajax({
type: 'POST',
url: 'ChatPageTest.aspx/SendOnlineContacts',
data: '{}',
contentType: 'application/json; charset=utf-8',
dataType: 'json',
success: function (data) {
// what to do here to read the DataTable ??
}
...
請幫忙,謝謝你
您必須定義一個能夠在JavaScript
讀取的格式,因此在將DataTable
發送到客戶端之后首先將其編譯為該格式。 在這種情況下,最常見的選擇是JSON
。
請查看: 將ASP.NET DataTable轉換為JSON,在JavaScript中使用DataTable以獲取完整的實現細節。
嘗試這個:
public object[][] SendOnlineContacts()
{
//...
for (int i = 0; i < FriendsDt.Rows.Count; i++)
{
int FriendID = Convert.ToInt16(FriendsDt.Rows[i][0]);
DataRow[] FriendisOnlineRow = ConnectedClientDt.Select("ClientID=" + FriendID);
if (FriendisOnlineRow.Length > 0) // friend is online
{
// new SQLHelper(SQLHelper.ConnectionStrings.WebSiteConnectionString).Update("Update clients set USER_STATUS='O' where CLIENT_ID=" + FriendsDt.Rows[i][0]);
FriendsInfo.Rows.Add(FriendsDt.Rows[i][0] + "," + FriendsDt.Rows[i][1] + "," + FriendsDt.Rows[i][2] + "," + "O");
}
}
var rows = FriendsInfo.Rows
.OfType<DataRow>()
.Select(row => row.ItemArray)
.ToArray();
return rows;
}
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