How ASP. NET converts a dataset to josn and outputs

public class Jsonutil

{

public string ToJson (DataSet dataset)

{

String jsonstring = "{";

foreach (DataTable table in Dataset.tables)

{

Jsonstring + = "" "+ table. TableName + "" ":" + ToJson (table) + ",";

}

jsonstring = Jsonstring.trimend (', ');

return jsonstring + "}";

}

public string ToJson (DataTable dt)

{

StringBuilder jsonstring = new StringBuilder ();

Jsonstring.append ("[");

DataRowCollection DRC = dt. Rows;

for (int i = 0; i < DRC. Count; i++)

{

Jsonstring.append ("{");

for (int j = 0; j < dt. Columns.count; J + +)

{

String strkey = dt. COLUMNS[J]. ColumnName;

String strvalue = Drc[i][j]. ToString ();

Type type = dt. COLUMNS[J]. DataType;

Jsonstring.append ("" "" + Strkey + "" ":");

strvalue = String.Format (strvalue, type);

Jsonstring.append ("" "" + strvalue + "" ",");

}

Jsonstring.append ("},");

}

Jsonstring.remove (jsonstring.length-1, 1);

Jsonstring.append ("]");

return jsonstring.tostring ();

}

}

Copy code using Jsonutil ju = new Jsonutil ();

Response.Write (Ju. ToJson (DS));

Copy code if parsing has a problem, you can replace the "" "in the code with" \ ""

How ASP. NET converts a dataset to josn and outputs