json转换
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互联网集市收集整理的这篇技术教程文章主要介绍了json转换，小编现在分享给大家，供广大互联网技能从业者学习和参考。文章包含4262字，纯文字阅读大概需要7分钟。
内容图文
#region ParseToJson
publicstaticstring ParseToJson(DataTable dt)
{
StringBuilder JsonString = new StringBuilder();
//Exception Handling if (dt != null && dt.Rows.Count > 0)
{
JsonString.Append("[ ");
for (int i = 0; i < dt.Rows.Count; i++)
{
JsonString.Append("{ ");
for (int j = 0; j < dt.Columns.Count; j++)
{
if (j < dt.Columns.Count - 1)
{
JsonString.Append("\"" + dt.Columns[j].ColumnName.ToString() + "\":" + "\"" + FilterJson(dt.Rows[i][j].ToString()) + "\",");
}
elseif (j == dt.Columns.Count - 1)
{
JsonString.Append("\"" + dt.Columns[j].ColumnName.ToString() + "\":" + "\"" + FilterJson(dt.Rows[i][j].ToString()) + "\"");
}
}
if (i == dt.Rows.Count - 1)
{
JsonString.Append("} ");
}
else
{
JsonString.Append("}, ");
}
}
JsonString.Append("]");
return JsonString.ToString();
}
else
{
returnstring.Empty;
}
}
publicstaticstring ParseToJson<T>(List<T> list, int rowCount)
{
string jsonStr = string.Empty;
if (rowCount > 0)
{
jsonStr = ParseToJson<T>(list);
jsonStr = "{ \"rowCount\": \"" + rowCount + "\", \"dataList\": " + jsonStr + " }";
}
else
{
jsonStr = "{ \"rowCount\": \"0\"}";
}
return jsonStr;
}
publicstaticstring ParseToJson<T>(List<T> list)
{
if (list != null && list.Count > 0)
{
PropertyInfo[] propertys = list[0].GetType().GetProperties();
// json
StringBuilder jsonStr = new StringBuilder();
jsonStr.Append("[");
for (int m = 0; m < list.Count; m++)
{
jsonStr.Append("{");
for (int i = 0; i < propertys.Length; i++)
{
var vl = propertys[i].GetValue(list[m], null) ;
vl = vl == DBNull.Value ? "" : propertys[i].GetValue(list[m], null);
vl = vl ?? "";
jsonStr.AppendFormat("\"{0}\":\"{1}\"", propertys[i].Name, Utils2.FilterJson(vl.ToString()));
if (i != propertys.Length - 1)
{
jsonStr.Append(",");
}
}
jsonStr.Append("}");
if (m != list.Count - 1)
{
jsonStr.Append(",");
}
}
jsonStr.Append("]");
return jsonStr.ToString();
}
returnstring.Empty;
}
publicstaticstring ParseToJson(DataTable dt, int rowCount)
{
string jsonStr = string.Empty;
if (rowCount > 0)
{
jsonStr = ParseToJson(dt);
jsonStr = "{ \"rowCount\": \"" + rowCount + "\", \"dataList\": " + jsonStr + " }";
}
else
{
jsonStr = "{ \"rowCount\": \"0\"}";
}
return jsonStr;
}
#endregion#region ParseToJson { rowCount:0 }
publicstaticstring ParseToJson(int rowCount, DataTable dt)
{
string jsonStr = string.Empty;
if (dt != null && dt.Rows.Count > 0)
{
jsonStr = ParseToJson(dt);
jsonStr = "{ \"rowCount\": \"" + rowCount + "\", \"dataList\": " + jsonStr + " }";
}
else
{
jsonStr = "{ \"rowCount\": \"0\"}";
}
return jsonStr;
}
publicstaticstring ParseToJson(object value)
{
string jsonStr = value != null ? value.ToString() : string.Empty;
return"{\"jsonMsg\":\"" + jsonStr + "\"}";
}
//权限publicstaticstring PerssionTojson(object value)
{
string jsonStr = value != null ? value.ToString() : string.Empty;
return"{\"Perssion\":\"" + jsonStr + "\"}";
}
//权限publicstaticstring SessionTojson(object value)
{
string jsonStr = value != null ? value.ToString() : string.Empty;
return"{\"session\":\"" + jsonStr + "\"}";
}
publicstaticstring LigeruiDataToJson<T>(List<T> list, int rowCount)
{
string jsonStr = string.Empty;
if (rowCount > 0)
{
jsonStr = ParseToJson<T>(list);
jsonStr = "{ \"Rows\":" + jsonStr + ",\"Total\":" + rowCount + " }";
}
else
{
jsonStr = "{ \"Rows\":0,\"Total\":0 }";
}
return jsonStr;
}
publicstaticstring LigeruiDataToJson(DataTable dt, int rowCount)
{
string jsonStr = string.Empty;
if (rowCount > 0)
{
jsonStr = ParseToJson(dt);
jsonStr = "{ \"Rows\":" + jsonStr + ",\"Total\":" + rowCount + " }";
}
else
{
jsonStr = "{ \"Rows\":0,\"Total\":0 }";
}
return jsonStr;
}
publicstaticstring FilterJson(string s)
{
StringBuilder sb = new StringBuilder();
for (int i = 0; i < s.Length; i++)
{
char c = s[i];
switch (c)
{
case‘\"‘:
sb.Append("\\\"");
break;
case‘\\‘:
sb.Append("\\\\");
break;
case‘/‘:
sb.Append("\\/");
break;
case‘\b‘:
sb.Append("\\b");
break;
case‘\f‘:
sb.Append("\\f");
break;
case‘\n‘:
//sb.Append("\\n");
sb.Append("<br />");
break;
case‘\r‘:
sb.Append("\\r");
break;
case‘\t‘:
sb.Append("\\t");
break;
default:
sb.Append(c);
break;
}
}
return sb.ToString();
}
#endregion
原文：http://www.cnblogs.com/muxueyuan/p/4482062.html
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