C# 从现有代码、当前日期绑定网格视图数据

我想使用下面的代码并显示在GridView中。 情况是，当用户单击GetCurrentDateTrans时，GridView将显示今天的日期作为结果。我已经将GridView id作为GridView1插入

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();  

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一项建议是改变：

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

例如：

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

或

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我猜您的列

SubmittedDateTime

是sql中的

DateTime

类型，因此您还需要

cast

在

date

中转换此列，以便像这样匹配当前日期

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

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

所以您的查询将如下所示

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

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

---

您没有将数据源指定给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();

---

所以您的问题到底是什么？要在网格视图中显示查询（当前日期），SQL中您列的格式是什么？将数据绑定到网格-

GridView1.DataSource