删除按钮仅在GridView中删除第一行

Question

我在GridView中添加了一个删除按钮。但是问题是它总是删除第一行。

例如，如果我要删除第二行或第三行，则将删除第一行中的数据。我只希望按钮删除旁边的行：

public void bindgrid()
{
    SqlConnection conn = new SqlConnection("cnString");
    SqlCommand cmd = new SqlCommand("select Id,Name, from myTable ", conn);
    SqlDataAdapter da = new SqlDataAdapter("", conn);
    da.SelectCommand = new SqlCommand("select Id,Name, from myTable", conn);
    DataSet ds = new DataSet();
    da.Fill(ds, "data");
    gridview1.DataSource = ds.Tables[0].DefaultView;
    gridview1.DataBind();
}

protected void gdview_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
    int userid = int.Parse(gridview1.DataKeys[0].Value.ToString());
    SqlConnection conn = new SqlConnection("cnString");
    SqlDataAdapter da = new SqlDataAdapter("", conn);
    conn.Open();
    da.DeleteCommand = new SqlCommand("delete from myTable where Id=" + userid , conn);
    da.DeleteCommand.ExecuteNonQuery();
    conn.Close();
    bindgrid();
}

Answer 1

您应该通过当前行索引而不是gridview1.DataKeys[0]

 protected void gdview_RowDeleting(object sender, GridViewDeleteEventArgs e)
   {
    int userid = int.Parse(gridview1.DataKeys[e.RowIndex].Value.ToString());
    SqlConnection conn = new SqlConnection("cnString");
    SqlDataAdapter da = new SqlDataAdapter("", conn);
    conn.Open();
    da.DeleteCommand = new SqlCommand("delete from myTable where Id=" + userid , conn);
    da.DeleteCommand.ExecuteNonQuery();
    conn.Close();
    bindgrid();
   }

Answer 2

问题在下线

int userid = int.Parse(gridview1.DataKeys[0].Value.ToString());

您总是使用[0]

获得第一行的用户ID

从" e"中获取适当的值并通过。

e.RowIndex

Answer 3

llike this

GridViewRow row = gridview1.Rows[e.RowIndex];
int userid = int.Parse(row[0].Value.ToString());

Answer 4

替换此行

int userid = int.Parse(gridview1.DataKeys[0].Value.ToString());

到这个

int userid = int.Parse(gridview1.DataKeys[e.RowIndex].Value.ToString());