I have a scenario where I insert/update data to Azure storage table 2 values MyValue and MyDate.
There are few scenarios where I have to update only 1 value MyValue and not MyDate.
But When I do update operation, it updates bothe the values. It changes myValue but makes MyDate to null.
Is there any operation in update where I can skip MyDate update and keep its value as it is?
public class MyEntity : TableEntity
{
public MyEntity(string partitionKey, string rowKey) :
base(partitionKey, rowKey)
{
}
public string MyValue { get; set; }
public DateTime MyTime { get; set; }
}
This code insert or replaces data
var entity = new MyEntity(partitionKey, rowKey)
{
MyValue = "test my value",
MyTime = DateTime.Now();
};
AddEntity(entity);
public void AddEntity(MyEntity entity)
{
CloudTable table = _tableClient.GetTableReference("myAzureStorageTableName");
TableOperation insertOp = TableOperation.InsertOrReplace(entity);
table.Execute(insertOp);
}
You can leverage Merge operation. Please note that you should set ETag to "*" if you don't want to read the entity before updating it.
References:
这里InsertOrMerge
和Merge
操作都可以。
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