Nullability of reference types in type of parameter 'sender' of 'void UserMessageItemTemplate.BorderText_SizeChanged(object sender, EventArgs e)' doesn't match the target delegate 'EventHandler' (possibly because of nullability attributes).

Non-nullable field '_parentGrid' must contain a non-null value when exiting constructor. Consider declaring the field as nullable.

Non-nullable property 'UserMessageItemTemplate' must contain a non-null value when exiting constructor. Consider declaring the property as nullable.

Non-nullable property 'BotMessageTemplate' must contain a non-null value when exiting constructor. Consider declaring the property as nullable.

Nullability of reference types in type of parameter 'sender' of 'void BotMessageItemTemplate.BorderText_SizeChanged(object sender, EventArgs e)' doesn't match the target delegate 'EventHandler' (possibly because of nullability attributes).

Non-nullable field '_parentGrid' must contain a non-null value when exiting constructor. Consider declaring the field as nullable.

Non-nullable field 'query' must contain a non-null value when exiting constructor. Consider declaring the field as nullable.

Non-nullable field 'collectionView' must contain a non-null value when exiting constructor. Consider declaring the field as nullable.

Non-nullable field 'conversationView' must contain a non-null value when exiting constructor. Consider declaring the field as nullable.

Non-nullable field '_currentCommand' must contain a non-null value when exiting constructor. Consider declaring the field as nullable.

Nullability of reference types in type of parameter 'sender' of 'void UserMessageItemTemplate.BorderText_SizeChanged(object sender, EventArgs e)' doesn't match the target delegate 'EventHandler' (possibly because of nullability attributes).

Non-nullable field '_parentGrid' must contain a non-null value when exiting constructor. Consider declaring the field as nullable.

Non-nullable property 'Text' must contain a non-null value when exiting constructor. Consider declaring the property as nullable.

Non-nullable property 'Data' must contain a non-null value when exiting constructor. Consider declaring the property as nullable.

Non-nullable property 'Prompt' must contain a non-null value when exiting constructor. Consider declaring the property as nullable.

Non-nullable property 'Url' must contain a non-null value when exiting constructor. Consider declaring the property as nullable.

Non-nullable property 'Id' must contain a non-null value when exiting constructor. Consider declaring the property as nullable.

Non-nullable property 'Choices' must contain a non-null value when exiting constructor. Consider declaring the property as nullable.

Non-nullable property 'Prompt' must contain a non-null value when exiting constructor. Consider declaring the property as nullable.

Non-nullable property 'Text' must contain a non-null value when exiting constructor. Consider declaring the property as nullable.

Nullability of reference types in type of parameter 'sender' of 'void UserMessageItemTemplate.BorderText_SizeChanged(object sender, EventArgs e)' doesn't match the target delegate 'EventHandler' (possibly because of nullability attributes).

Non-nullable field '_parentGrid' must contain a non-null value when exiting constructor. Consider declaring the field as nullable.

Non-nullable property 'UserMessageItemTemplate' must contain a non-null value when exiting constructor. Consider declaring the property as nullable.

Non-nullable property 'BotMessageTemplate' must contain a non-null value when exiting constructor. Consider declaring the property as nullable.

Nullability of reference types in type of parameter 'sender' of 'void BotMessageItemTemplate.BorderText_SizeChanged(object sender, EventArgs e)' doesn't match the target delegate 'EventHandler' (possibly because of nullability attributes).

Non-nullable field '_parentGrid' must contain a non-null value when exiting constructor. Consider declaring the field as nullable.

Non-nullable field 'query' must contain a non-null value when exiting constructor. Consider declaring the field as nullable.

Non-nullable field 'collectionView' must contain a non-null value when exiting constructor. Consider declaring the field as nullable.

Non-nullable field 'conversationView' must contain a non-null value when exiting constructor. Consider declaring the field as nullable.

Non-nullable field '_currentCommand' must contain a non-null value when exiting constructor. Consider declaring the field as nullable.

Nullability of reference types in type of parameter 'sender' of 'void UserMessageItemTemplate.BorderText_SizeChanged(object sender, EventArgs e)' doesn't match the target delegate 'EventHandler' (possibly because of nullability attributes).

Non-nullable field '_parentGrid' must contain a non-null value when exiting constructor. Consider declaring the field as nullable.

Non-nullable property 'UserMessageItemTemplate' must contain a non-null value when exiting constructor. Consider declaring the property as nullable.

Non-nullable property 'BotMessageTemplate' must contain a non-null value when exiting constructor. Consider declaring the property as nullable.

Nullability of reference types in type of parameter 'sender' of 'void BotMessageItemTemplate.BorderText_SizeChanged(object sender, EventArgs e)' doesn't match the target delegate 'EventHandler' (possibly because of nullability attributes).

Non-nullable field '_parentGrid' must contain a non-null value when exiting constructor. Consider declaring the field as nullable.

Non-nullable field 'query' must contain a non-null value when exiting constructor. Consider declaring the field as nullable.

Non-nullable field 'collectionView' must contain a non-null value when exiting constructor. Consider declaring the field as nullable.

Non-nullable field 'conversationView' must contain a non-null value when exiting constructor. Consider declaring the field as nullable.