I am having a SQL Query with multiple child FOR JSON Path with a final FOR JSON Path at the end. The JSON being formed is relatively large. However when I am trying to read the JSON from C# the JSON is not appearing properly. C# code below to read the JSON from SQL Server
var queryWithForJson = "EXEC TEST_SP";
var conn = new SqlConnection(ConfigurationManager.ConnectionStrings["DB"].ConnectionString);
var cmd = new SqlCommand(queryWithForJson, conn);
cmd.CommandTimeout = 0;
conn.Open();
var jsonResult = new StringBuilder();
var reader = cmd.ExecuteReader();
if (!reader.HasRows)
{
jsonResult.Append("[]");
}
else
{
while (reader.Read())
{
jsonResult.Append(reader.GetValue(0).ToString());
}
}
reader.Close();
System.IO.StreamWriter file = new System.IO.StreamWriter(@"C:\file.json");
file.WriteLine(jsonResult.ToString());
The JSON file created is ending with:
"Det":[{"id":3700159,"address":"601 Union St Seattle, WA 98
As you can see the JSON did not end properly. Any idea why this is happening?
Use a using
statement on your file. I replicated your issue when I didn't do this.
using (System.IO.StreamWriter file = new System.IO.StreamWriter(@"C:\file.json"))
{
file.Write(jsonResult.ToString());
}
After looking into this a bit more, it looks like you would also get the correct results if you flushed the StreamWriter. You could do that with file.AutoFlush = true;
or with file.Flush();
. However you choose to accomplish this, you really should have a using statement around your StreamWriter anyway to be sure it is disposed of correctly.
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