本文介绍了如何更新gridview中的选定行？的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
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I have a TextBox with id=txtPlace and a gridview. If a user selects a row an put some Information in the TextBox and click on save. The Information should replace older records in the database(SQL)
But It does not work. When I click on save, nothing happens.
我尝试过：
What I have tried:
protected void btnSave_Click(object sender, EventArgs e)
{
var id = GridView2.SelectedDataKey.Values[0].ToString();
string constr = ConfigurationManager.ConnectionStrings["con"].ConnectionString;
using (SqlConnection conn = new SqlConnection(constr))
{
string query = "UPDATE user SET place= @place where ID = @D ";
SqlCommand cmd = new SqlCommand(query, conn);
cmd.Parameters.AddWithValue("@place", txtPlace.Text);
cmd.Parameters.AddWithValue("@ID", id);
}
}
推荐答案
cmd.ExecuteNonQuery();
：）
:)
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