How to add a single backslash via transformation in a B2C custom policy?

Question

Hi,

Have a requirement to prepend a claim with a AD\ in a B2C custom policy, I'm having trouble adding a single backslash. When I add '\AD' it transforms to '\\AD' . When I add '\', it transforms to '\\AD', etc.... So basically it always doubles the backslashes.

Below is the transformation. Please advise. Thank you.

    <ClaimsTransformation Id="PrependAD" TransformationMethod="FormatStringClaim">
        <InputClaims>
          <InputClaim ClaimTypeReferenceId="extension_signinName"
            TransformationClaimType="inputClaim" />
        </InputClaims>
        <InputParameters>
          <InputParameter Id="stringFormat" DataType="string"
            Value="AD\{0}" />
        </InputParameters>
        <OutputClaims>
          <OutputClaim ClaimTypeReferenceId="extension_signinName"
            TransformationClaimType="outputClaim" />
        </OutputClaims>
      </ClaimsTransformation>

Answer 1

Hi @Gola, Mariusz , you can use &#92 as a character entity reference for XML. This will represent the backslash. For example:

<ClaimsTransformation Id="PrependAD" TransformationMethod="FormatStringClaim">
    <InputClaims>
        <InputClaim ClaimTypeReferenceId="extension_signinName" TransformationClaimType="inputClaim" />
    </InputClaims>
    <InputParameters>
        <InputParameter Id="stringFormat" DataType="string" Value="AD&#92;{0}" />
    </InputParameters>
    <OutputClaims>
        <OutputClaim ClaimTypeReferenceId="extension_signinName" TransformationClaimType="outputClaim" />
    </OutputClaims>
</ClaimsTransformation>

Please let me know if you have any questions and I can help you further.

If this answer helps you please mark "Accept Answer" so other users can reference it.

Thank you,

James