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c# - How to auto generate a RowKey in a Azure table storage using C#

问题描述

I am trying to change the RowKey from a predefined lastname from the Micorosft Docs tutorial: https://docs.microsoft.com/en-us/azure/cosmos-db/table-storage-how-to-use-dotnet#add-an-entity-to-a-table, to a unique value.

This is my current code:

private void storeuserinput(Activity activity)
        {
            var uid = activity.From.Id;
            var uname = activity.From.Name;

            if (activity.Text?.ToLower().ToString() == "no" || activity.Text?.ToLower().ToString() == "NO" || activity.Text?.ToLower().ToString() == "No" || activity.Text?.ToLower().ToString() == "Nope" || activity.Text?.ToLower().ToString() == "nope")
            {
                var userinput = firstmessage;

                string connectionString = CloudConfigurationManager.GetSetting("StorageConnectionString");

                // Parse the connection string and return a reference to the storage account.
                CloudStorageAccount storageAccount = CloudStorageAccount.Parse(CloudConfigurationManager.GetSetting("StorageConnectionString"));

                // Create the table client.
                CloudTableClient tableClient = storageAccount.CreateCloudTableClient();

                // Retrieve a reference to the table.
                CloudTable table = tableClient.GetTableReference("UnansweredChatBot");

                // Create the table if it doesn't exist.
                table.CreateIfNotExists();

                // Create a new customer entity.
                CustomerEntity customer1 = new CustomerEntity("NoSolution", "Smith");
                customer1.Query = firstmessage;

                // Create the TableOperation object that inserts the customer entity.
                TableOperation insertOperation = TableOperation.Insert(customer1);

                // Execute the insert operation.
                table.Execute(insertOperation);
            }

            //extract other data from "activity" object

            //your code logic here
            //store data in your table storage

            //Note: specifcial scenario of user send attachment
        }

public class CustomerEntity : TableEntity
{
    public CustomerEntity(string lastName, string firstName)
    {
        this.PartitionKey = lastName;
        this.RowKey = firstName;
    }

public CustomerEntity() { } // the parameter-less constructor must be provided

public string Query { get; set; }
}

Any insight help with this problem would be much appreciated!

标签： c#azureazure-table-storagerow-key

解决方案

在您的客户实体类中，您正在调用构造函数 

public CustomerEntity(string lastName, string firstName)
{ 
    this.PartitionKey = lastName;
    this.RowKey = firstName;
}

因此，当您初始化一个新对象时，您将通过构造函数中定义的两个参数firstname和lastname.

新的

这些由构造函数按名称设置，并且在其上下文之外（即在表存储中）没有任何意义。

CustomerEntity customer1 = new CustomerEntity("NoSolution", "Smith");

在您的代码中，您需要做的就是将您的构造函数更改为

public CustomerEntity(string requesterName, string uniqueRowKey)
{ 
    this.PartitionKey = requesterName ;
    this.RowKey = uniqueRowKey;
}

您的 RowKey 必须是唯一的，并且您的分区键用于通过对相似类型的行进行分组来简化搜索。然后，您可以像这样传递给您的构造函数：

string rowKey = Guid.NewGuid().ToString("N"); //This give you a unique guid with no hyphens.
CustomerEntity customer1 = new CustomerEntity("John Smith", rowKey);

这会将您的实体分别插入分区键和行键。

那是你要找的那种东西吗？

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