c# - 将一个方法作为参数传递给另一个方法

标签 c#

<分区>

我想将一个方法作为参数传递，以从我的程序中删除重复代码。这是我想要的功能:

 private void sqlQuery(Method sqlMethod)
{
    conn.ConnectionString = ConfigurationManager.ConnectionStrings["ApplicationServices"].ConnectionString;
    try
    {
        //open SQL connection
        conn.Open();
        sqlMethod();
    }
    catch (Exception ex)
    {
        System.Diagnostics.Debug.Write(ex.ToString());
    }
    finally
    {
        conn.Close();
    }
}

使用:

private void insertTemplate()
{
    //create SQL command
    SqlCommand insertTemplate = new SqlCommand("INSERT INTO [SavedDescriptionTemplates] (SavedDescription, UserId, CreatedDate) VALUES (@descriptionParam, @userIdParam, @createdDateParam)", conn);
    //create and assign parameters
    insertTemplate.Parameters.AddWithValue("@descriptionParam", descriptionInput.Text);
    insertTemplate.Parameters.AddWithValue("@userIdParam", Int32.Parse(userNameDropDown.SelectedItem.Value));
    insertTemplate.Parameters.AddWithValue("@createdDateParam", DateTime.Now);
    //execute command and retrieve primary key from the above insert and assign to variable
    insertTemplate.ExecuteNonQuery();
}

电话会是: