[代碼] [C#]Datatable和json互相轉換操作
#region DataTable 轉換為Json字符串實例方法
/// <summary>
/// GetClassTypeJosn 的摘要說明
/// </summary>
publicclassGetClassTypeJosn : IHttpHandler
{
/// <summary>
/// 文件名:DataTable 和Json 字符串互轉
/// 版權所有:Copyright (C) Create Family Wealth liangjw
/// 創建標示：2013-08-03
/// </summary>
//用法說明實例
publicvoidProcessRequest(HttpContext context)
{
context.Response.ContentType = "application/json";
context.Response.Charset = "utf-8";
HttpRequest req = context.Request;
stringmethod = req["method"].ToStr().ToLower();
//獲取合同明細列表 DataTable 轉換為Json字符串
if(method == "txtdate")
{
stringjson = "";
BO.MakeContractMx bll = newMakeContractMx();
DataSet ds = bll.GetDataTable();
if(ds.Tables.Count > 0)
{
json =ToJson(ds.Tables[0]);
}
context.Response.Write(json);
return;
}
}
publicboolIsReusable
{
get
{
returnfalse;
}
}
}
#endregion
#region Json字符串轉換為DataTable 實例方法
publicDataTable JsonToDataTable(json)
{
DataTable dt= ToDataTable(json);
returndt;
}
#endregion
#region DataTable 轉換為Json 字符串
/// <summary>
/// DataTable 對象 轉換為Json 字符串
/// </summary>
/// <param name="dt"></param>
/// <returns></returns>
publicstaticstringToJson(thisDataTable dt)
{
JavaScriptSerializer javaScriptSerializer = newJavaScriptSerializer();
javaScriptSerializer.MaxJsonLength = Int32.MaxValue; //取得最大數值
ArrayList arrayList = newArrayList();
foreach(DataRow dataRow indt.Rows)
{
Dictionary<string, object> dictionary = newDictionary<string, object>(); //實例化一個參數集合
foreach(DataColumn dataColumn indt.Columns)
{
dictionary.Add(dataColumn.ColumnName, dataRow[dataColumn.ColumnName].ToStr());
}
arrayList.Add(dictionary); //ArrayList集合中添加鍵值
}
returnjavaScriptSerializer.Serialize(arrayList); //返回一個json字符串
}
#endregion
#region Json 字符串 轉換為 DataTable數據集合
/// <summary>
/// Json 字符串 轉換為 DataTable數據集合
/// </summary>
/// <param name="json"></param>
/// <returns></returns>
publicstaticDataTable ToDataTable(thisstringjson)
{
DataTable dataTable = newDataTable(); //實例化
DataTable result;
try
{
JavaScriptSerializer javaScriptSerializer = newJavaScriptSerializer();
javaScriptSerializer.MaxJsonLength = Int32.MaxValue; //取得最大數值
ArrayList arrayList = javaScriptSerializer.Deserialize<ArrayList>(json);
if(arrayList.Count > 0)
{
foreach(Dictionary<string, object> dictionary inarrayList)
{
if(dictionary.Keys.Count<string>() == 0)
{
result = dataTable;
returnresult;
}
if(dataTable.Columns.Count == 0)
{
foreach(stringcurrent indictionary.Keys)
{
dataTable.Columns.Add(current, dictionary[current].GetType());
}
}
DataRow dataRow = dataTable.NewRow();
foreach(stringcurrent indictionary.Keys)
{
dataRow[current] = dictionary[current];
}
dataTable.Rows.Add(dataRow); //循環添加行到DataTable中
}
}
}
catch
{
}
result = dataTable;
returnresult;
}
#endregion
#region 轉換為string字符串類型
/// <summary>
/// 轉換為string字符串類型
/// </summary>
/// <param name="s">獲取需要轉換的值</param>
/// <param name="format">需要格式化的位數</param>
/// <returns>返回一個新的字符串</returns>
publicstaticstringToStr(thisobjects, stringformat = "")
{
stringresult = "";
try
{
if(format == "")
{
result = s.ToString();
}
else
{
result = string.Format("{0:"+ format + "}", s);
}
}
catch
{
}
returnresult;
}
#endregion
[代碼] [C#]Datatable和json互相轉換操作
#region DataTable 轉換為Json字符串實例方法
/// <summary>
/// GetClassTypeJosn 的摘要說明
/// </summary>
publicclassGetClassTypeJosn : IHttpHandler
{
/// <summary>
/// 文件名:DataTable 和Json 字符串互轉
/// 版權所有:Copyright (C) Create Family Wealth liangjw
/// 創建標示：2013-08-03
/// </summary>
//用法說明實例
publicvoidProcessRequest(HttpContext context)
{
context.Response.ContentType = "application/json";
context.Response.Charset = "utf-8";
HttpRequest req = context.Request;
stringmethod = req["method"].ToStr().ToLower();
//獲取合同明細列表 DataTable 轉換為Json字符串
if(method == "txtdate")
{
stringjson = "";
BO.MakeContractMx bll = newMakeContractMx();
DataSet ds = bll.GetDataTable();
if(ds.Tables.Count > 0)
{
json =ToJson(ds.Tables[0]);
}
context.Response.Write(json);
return;
}
}
publicboolIsReusable
{
get
{
returnfalse;
}
}
}
#endregion
#region Json字符串轉換為DataTable 實例方法
publicDataTable JsonToDataTable(json)
{
DataTable dt= ToDataTable(json);
returndt;
}
#endregion
#region DataTable 轉換為Json 字符串
/// <summary>
/// DataTable 對象 轉換為Json 字符串
/// </summary>
/// <param name="dt"></param>
/// <returns></returns>
publicstaticstringToJson(thisDataTable dt)
{
JavaScriptSerializer javaScriptSerializer = newJavaScriptSerializer();
javaScriptSerializer.MaxJsonLength = Int32.MaxValue; //取得最大數值
ArrayList arrayList = newArrayList();
foreach(DataRow dataRow indt.Rows)
{
Dictionary<string, object> dictionary = newDictionary<string, object>(); //實例化一個參數集合
foreach(DataColumn dataColumn indt.Columns)
{
dictionary.Add(dataColumn.ColumnName, dataRow[dataColumn.ColumnName].ToStr());
}
arrayList.Add(dictionary); //ArrayList集合中添加鍵值
}
returnjavaScriptSerializer.Serialize(arrayList); //返回一個json字符串
}
#endregion
#region Json 字符串 轉換為 DataTable數據集合
/// <summary>
/// Json 字符串 轉換為 DataTable數據集合
/// </summary>
/// <param name="json"></param>
/// <returns></returns>
publicstaticDataTable ToDataTable(thisstringjson)
{
DataTable dataTable = newDataTable(); //實例化
DataTable result;
try
{
JavaScriptSerializer javaScriptSerializer = newJavaScriptSerializer();
javaScriptSerializer.MaxJsonLength = Int32.MaxValue; //取得最大數值
ArrayList arrayList = javaScriptSerializer.Deserialize<ArrayList>(json);
if(arrayList.Count > 0)
{
foreach(Dictionary<string, object> dictionary inarrayList)
{
if(dictionary.Keys.Count<string>() == 0)
{
result = dataTable;
returnresult;
}
if(dataTable.Columns.Count == 0)
{
foreach(stringcurrent indictionary.Keys)
{
dataTable.Columns.Add(current, dictionary[current].GetType());
}
}
DataRow dataRow = dataTable.NewRow();
foreach(stringcurrent indictionary.Keys)
{
dataRow[current] = dictionary[current];
}
dataTable.Rows.Add(dataRow); //循環添加行到DataTable中
}
}
}
catch
{
}
result = dataTable;
returnresult;
}
#endregion
#region 轉換為string字符串類型
/// <summary>
/// 轉換為string字符串類型
/// </summary>
/// <param name="s">獲取需要轉換的值</param>
/// <param name="format">需要格式化的位數</param>
/// <returns>返回一個新的字符串</returns>
publicstaticstringToStr(thisobjects, stringformat = "")
{
stringresult = "";
try
{
if(format == "")
{
result = s.ToString();
}
else
{
result = string.Format("{0:"+ format + "}", s);
}
}
catch
{
}
returnresult;
}
#endregion