c# - SQL Server 日期从字符串转换

Question

我需要将从 ASP.Net 文本框中获取的日期存储到 SQL Server 2008 date 列中。

我收到以下异常消息。

Conversion failed when converting date and/or time from character string.

我的代码是:

SqlConnection cn;
SqlCommand cmd;
SqlDataAdapter da;

int n=4;
protected void Page_Load(object sender, EventArgs e)
{
    cn = new SqlConnection(<Connection String>);
}

protected void Button1_Click(object sender, EventArgs e)
 {
        try
      {
          string query = "insert into temp values('" + TextBox1.Text  + "')";
          cn.Open();
          cmd = new SqlCommand(query, cn);
          cmd.ExecuteNonQuery();
          cn.Close();
          Response.Write("Record inserted successfully");
     }
    catch (Exception ex)
    {
         Response.Write(ex.Message);
    }

}

请帮忙..

提前致谢

Answer 1

将您的代码更改为以下内容(假设 temp 中的列实际上是一个 DateTime):

protected void Button1_Click(object sender, EventArgs e)
{
    try
    {
        string query = "insert into temp values(@Value)";
        cn.Open();
        cmd = new SqlCommand(query, cn);
        cmd.Parameters.AddWithValue("@Value", DateTime.Parse(TextBox1.Text));
        cmd.ExecuteNonQuery();
        cn.Close();
        Response.Write("Record inserted successfully");
 }
catch (Exception ex)
{
     Response.Write(ex.Message);
}

您还应该更改您的逻辑以验证 TextBox1.Text 实际上是一个有效日期。