从现有代码、当前日期绑定网格视图数据

Question

我想使用下面的代码并在 GridView 中显示。情况是，当用户单击 GET CURRENT DATE TRANS 时，GridView 将显示今天的日期作为结果。我已经将 GridView id 插入为 GridView1

string connetionString = null;
        SqlConnection connection;
        SqlCommand command;
        string sql = null;

        connetionString = "Data Source=AXSQL;Initial Catalog=UniKL;User ID=aten;Password=pass@WORD1";
        sql = "Select * FROM [UniKL].[dbo].[BudgetPlanning_Transaction] WHERE [SubmmitedDateTime] = cast(getdate() as date)";

        GridView1.DataBind();

        connection = new SqlConnection(connetionString);

        connection.Open();
        command = new SqlCommand(sql, connection);
        command.ExecuteNonQuery();
        command.Dispose();
        connection.Close();

Answer 1

一个建议是更改：

sql = "Select * FROM [UniKL].[dbo].[BudgetPlanning_Transaction] WHERE [SubmmitedDateTime] = cast(getdate() as date)";

类似于：

sql = "Select * FROM [UniKL].[dbo].[BudgetPlanning_Transaction] WHERE [SubmmitedDateTime] = " + DateTime.Now.toShortDateString();

或

sql = "Select * FROM [UniKL].[dbo].[BudgetPlanning_Transaction] WHERE [SubmmitedDateTime] = " + DateTime.Now.toString("yyyy-MM-dd");

Answer 2

我猜你的列 SubmittedDateTime 是 sql 中的 DateTime 类型，因此你还需要 cast date 中的此列以匹配当前这样的约会

cast([SubmmitedDateTime] as Date) = cast(getdate() as date);

因此您的查询将如下所示

sql = "Select * FROM [UniKL].[dbo].[BudgetPlanning_Transaction] WHERE cast([SubmmitedDateTime] as Date) = cast(getdate() as date)";

Answer 3

您没有将数据源分配给 GridView1。请使用以下代码：

string connetionString = null;
SqlConnection connection;
SqlCommand command;
string sql = null;

connetionString = "Data Source=AXSQL;Initial Catalog=UniKL;User ID=aten;Password=pass@WORD1";
sql = "Select * FROM [UniKL].[dbo].[BudgetPlanning_Transaction] WHERE [SubmmitedDateTime] = cast(getdate() as date)";

//GridView1.DataBind();

connection = new SqlConnection(connetionString);
connection.Open();
command = new SqlCommand(sql, connection);

//Get data into a reader
SqlDataReader sr = command.ExecuteReader();
//command.ExecuteNonQuery();

//Set the datasource of GridView1
GridView1.DataSource = sr;
GridView1.DataBind();


command.Dispose();
connection.Close();

从现有代码、当前日期绑定网格视图数据

Bind grid view data from existing code, current date

c#

asp.net

gridview