Error:Cannot implicitly convert type 'Microsoft.Crm.Sdk.Query.ConditionExpression[]' to 'System.Collections.ArrayList'
I written this code
ConditionExpression condition1 = new ConditionExpression();
// Set the condition for the retrieval to be when the city in the account's address is Sammamish.
condition1.AttributeName = "address1_city";
condition1.Operator = ConditionOperator.Like;
condition1.Values = new string[] { "Hyderabad" };
// Create the FilterExpression.
FilterExpression filter = new FilterExpression();
// Set the properties of the FilterExpression.
filter.FilterOperator = LogicalOperator.And;
filter.Conditions = new ConditionExpression[] { condition1 }; \\here I am getting error