如何在文本框中显示datagrid视图数据 [英] How to display datagrid view data in textbox

问题描述

您好我正在尝试在文本框中显示datagridview数据。

我为此编写代码并显示但只显示表的最后一条记录

我的代码如下所示



我尝试过：



int id;

id = Convert.ToInt32（dgproduct.Rows [e.RowIndex] .Cells [id]。Value.ToString（））;



SqlConnection connection = new SqlConnection（cn）;

SqlCommand cmd = new SqlCommand（select * from myname，connection）;

DataTable dt = new DataTable（ ）;

SqlDataAdapter da = new SqlDataAdapter（cmd）;



connection.Open（）;

da .Fill（dt）;

foreach（dt.Rows中的DataRow dr）

{

txtpid.Text = dr [ID] .ToString（）;

txtpname.Text = dr [Name]。ToString（）;

}

c onnection.Close（）;

Hi I am trying to display datagridview data in text box.
I wrote code for that and it is showing but only the last record of the table
my code is as below

What I have tried:

int id;
id = Convert.ToInt32(dgproduct.Rows[e.RowIndex].Cells["id"].Value.ToString());

SqlConnection connection = new SqlConnection(cn);
SqlCommand cmd = new SqlCommand("select * from myname", connection);
DataTable dt = new DataTable();
SqlDataAdapter da = new SqlDataAdapter(cmd);

connection.Open();
da.Fill(dt);
foreach (DataRow dr in dt.Rows)
{
txtpid.Text = dr["ID"].ToString();
txtpname.Text = dr["Name"].ToString();
}
connection.Close();

推荐答案

由于你正在从表中选择*，它将获取整个数据并在循环中它将最后一个索引值分配给文本框。

你应该使用 where 子句选择确切的项目并分配结果到文本框。

Since you are doing "Select * from table" it will fetch the whole data and in the loop it will assign the last index value to the textbox.
you shall select the exact item using where clause and assign the result to text boxes.

SqlCommand cmd = new SqlCommand("select top 1 * from myname where id = @id", connection);
       cmd.Parameters.Add("@id", id);
       DataTable dt = new DataTable();

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