# Remove backslash from json string c# (Error 859)
**URL:** https://community.bitquery.io/t/remove-backslash-from-json-string-c-error-859/1167
**Category:** GraphQL API
**Tags:** api, error
**Created:** [August 12, 2022, 1:54pm UTC](https://community.bitquery.io/t/remove-backslash-from-json-string-c-error-859/1167 "2022-08-12T13:54:26Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@tifa](https://community.bitquery.io/u/tifa)
#### Post date: [August 12, 2022, 1:54pm UTC](https://community.bitquery.io/t/remove-backslash-from-json-string-c-error-859/1167/1 "2022-08-12T13:54:27Z")
i try to send api call, But I get an error
this is my code
```auto
static async Task Main()
{
string query = @"query MyQuery {ethereum(network: bsc) {transfers(currency: {is: ""0x2170ed0880ac9a755fd29b2688956bd959f933f8""} success: true options: { desc:""amount"", offset: 0, limit: 3}) {receiver {uniq: address} amount} } }";
var data = new StringContent(query, Encoding.Default, "application/json");
var url = "https://graphql.bitquery.io";
using var client = new HttpClient();
client.DefaultRequestHeaders.Add("X-API-KEY", "***";
var response = await client.PostAsync(url, data);
var res = response.Content.ReadAsStringAsync().Result;
Console.WriteLine(res);
}
```
and server risponce is
---
### Author:  [@bitquery-support](https://community.bitquery.io/u/bitquery-support)
#### Post date: [August 13, 2022, 5:33am UTC](https://community.bitquery.io/t/remove-backslash-from-json-string-c-error-859/1167/2 "2022-08-13T05:33:53Z")
Hello, try something like this!
```cs
static async Task Main()
{
string query = @"query MyQuery {ethereum(network: bsc) {transfers(currency: {is: \"0x2170ed0880ac9a755fd29b2688956bd959f933f8"\} success: true options: { desc:\"amount"\, offset: 0, limit: 3}) {receiver {uniq: address} amount} } }";
var data = new StringContent(query, Encoding.Default, "application/json");
var url = "https://graphql.bitquery.io";
using var client = new HttpClient();
client.DefaultRequestHeaders.Add("API-KEY", "***");
var response = await client.PostAsync(url, data);
var res = response.Content.ReadAsStringAsync().Result;
Console.WriteLine(res);
}
```
note that it is better to use double quotation marks
---
### Author:  [@tifa](https://community.bitquery.io/u/tifa)
#### Post date: [August 13, 2022, 12:15pm UTC](https://community.bitquery.io/t/remove-backslash-from-json-string-c-error-859/1167/3 "2022-08-13T12:15:28Z")
Hi
The result is the same for ( "" ) and ( \" )
---
### Author:  [@bitquery-support](https://community.bitquery.io/u/bitquery-support)
#### Post date: [August 14, 2022, 3:46am UTC](https://community.bitquery.io/t/remove-backslash-from-json-string-c-error-859/1167/4 "2022-08-14T03:46:51Z")
I have no knowledge in c# to help you deeply, but what I can assure you is that there is no error on the part of bitquery, the query works correctly
---
### Author:  [@gaurav](https://community.bitquery.io/u/gaurav)
#### Post date: [August 16, 2022, 10:46am UTC](https://community.bitquery.io/t/remove-backslash-from-json-string-c-error-859/1167/5 "2022-08-16T10:46:35Z")
We have launched “Code Snippet” So now you can get code for your query from IDE.
