参考我的问题,
How to get boundfield value, or am I totally wrong?
我正在尝试使用c#而不是ASP.NET将更新参数添加到SQLDataSource但是我收到错误,
protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
int userID = Convert.ToInt32(GridView1.DataKeys[e.RowIndex].Values["userID"].ToString());
string userName = "";
string city = "";
string updateStatement = "Update myTable set userName=@userName, city=@city where userID=@userID";
foreach (DictionaryEntry entry in e.NewValues)
{
if (entry.Key == "userName")
userName = entry.Value.ToString();
if (entry.Key == "city")
city = entry.Value.ToString();
}
using (SqlDataSource ds = new SqlDataSource(ConnectionString(), updateStatement))
{
ds.UpdateParameters.Add("@userName");
ds.UpdateParameters.Add("@city");
ds.UpdateParameters.Add("@UserId");
}
gvDetails.EditIndex = -1;
BindData();
}
如何传递参数值:S
ds.UpdateParameters.Add("@userName");
ds.UpdateParameters.Add("@city");
ds.UpdateParameters.Add("@UserId");
但我不知道正确的语法,有人可以指导我正确的方向吗
答案 0 :(得分:3)
我认为您应该使用SqlCommand而不是SqlDataSource:
using (SqlConnection connection = new SqlConnection(ConnectionString())
using (SqlCommand cmd = new SqlCommand(updateStatement, connection)) {
connection.Open();
cmd.Parameters.Add(new SqlParameter("@Name", userName));
cmd.Parameters.Add(new SqlParameter("@city", city));
cmd.Parameters.Add(new SqlParameter("@UserId", userID));
cmd.ExecuteNonQuery();
}
答案 1 :(得分:1)
如果你想使用SQLDataSource,那么我相信语法是。
ds.UpdateParameters.Add("userName", "someDefaultValue");
否'@',您可以提供默认值。
答案 2 :(得分:0)
您无法向SqlDataSource
添加参数。您可以添加SqlCommand
。尝试类似的东西;
string updateStatement = "Update myTable set userName=@userName, city=@city where userID=@userID";
using (SqlDataSource ds = new SqlDataSource(ConnectionString(), updateStatement))
{
SqlCommand cmd = new SqlCommand(updateStatement);
cmd.Parameters.Add("@userName");
cmd.Parameters.Add("@city");
cmd.Parameters.Add("@UserId");
cmd.Paramters["@City"].Value = city;
cmd.Paramters["@userName"].Value = userName;
cmd.Paramters["@UserId"].Value = userID;
GridView1.DataSource = ds;
GridView1.DataBind();
}