diff --git a/docs/src/api/class-page.md b/docs/src/api/class-page.md
index 21b51acde8..922a7df3bf 100644
--- a/docs/src/api/class-page.md
+++ b/docs/src/api/class-page.md
@@ -3344,12 +3344,19 @@ await page.GetByRole("button", new() { Name = "Start here" }).ClickAsync();
 Locator that triggers the handler.
 
 ### param: Page.addLocatorHandler.handler
-* langs: js, python, csharp
+* langs: js, python
 * since: v1.42
 - `handler` <[function]>
 
 Function that should be run once [`param: locator`] appears. This function should get rid of the element that blocks actions like click.
 
+### param: Page.addLocatorHandler.handler
+* langs: csharp
+* since: v1.42
+- `handler` <[function](): [Promise<any>]>
+
+Function that should be run once [`param: locator`] appears. This function should get rid of the element that blocks actions like click.
+
 ### param: Page.addLocatorHandler.handler
 * langs: java
 * since: v1.42
diff --git a/utils/doclint/generateDotnetApi.js b/utils/doclint/generateDotnetApi.js
index 368740feb2..ed801b4057 100644
--- a/utils/doclint/generateDotnetApi.js
+++ b/utils/doclint/generateDotnetApi.js
@@ -709,6 +709,9 @@ function translateType(type, parent, generateNameCallback = t => t.name, optiona
   if (type.expression === '[null]|[Error]')
     return 'void';
 
+  if (type.name == 'Promise' && type.templates?.[0].name === 'any')
+    return 'Task';
+
   if (type.union) {
     if (type.union[0].name === 'null' && type.union.length === 2)
       return translateType(type.union[1], parent, generateNameCallback, true, isReturnType);
@@ -799,6 +802,8 @@ function translateType(type, parent, generateNameCallback = t => t.name, optiona
       if (returnType === null)
         throw new Error('Unexpected null as return type.');
 
+      if (!argsList)
+        return `Func<${returnType}>`;
       return `Func<${argsList}, ${returnType}>`;
     }
   }
diff --git a/utils/generate_types/test/test.ts b/utils/generate_types/test/test.ts
index 0bffaab281..05ede91adf 100644
--- a/utils/generate_types/test/test.ts
+++ b/utils/generate_types/test/test.ts
@@ -154,6 +154,12 @@ playwright.chromium.launch().then(async browser => {
     return 'something random for no reason';
   });
 
+  await page.addLocatorHandler(page.locator(''), () => {});
+  await page.addLocatorHandler(page.locator(''), () => 42);
+  await page.addLocatorHandler(page.locator(''), async () => { });
+  await page.addLocatorHandler(page.locator(''), async () => 42);
+  await page.addLocatorHandler(page.locator(''), () => Promise.resolve(42));
+
   await page.keyboard.type('Hello'); // Types instantly
   await page.keyboard.type('World', { delay: 100 }); // Types slower, like a user