-1
我試圖映射一個SQL數據庫查詢，以通過搜索按鈕上的單擊事件從文本框中提取查詢，並在其他文本框中顯示結果相同的形式。c＃SQL搜索按鈕點擊事件，填充到文本框
但現在我卡住了。我要麼沒有結果，要麼沒有處理異常。我一直在谷歌和谷歌，我不知道下一步該怎麼做。
這是我到目前爲止有：
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Data.SqlClient;
using System.Windows;
namespace EmployeeEvaluation
{
public partial class frmOpenRead : Form
{
public frmOpenRead()
{
InitializeComponent();
}
private void label5_Click(object sender, EventArgs e)
{
}
private void button1_Click(object sender, EventArgs e)
{
// QUIT BUTTON
Close();
}
private void btnSearch_Click(object sender, EventArgs e)
{
// THIS IS THE SEARCH BUTTON
string conString = @"Data Source=SQL1;Initial Catalog=EE;Integrated Security=True";
SqlConnection sc = new SqlConnection(conString);
string selectSql = "SELECT * FROM tbl_TextBoxes where [Ename] = @Ename";
SqlCommand com = new SqlCommand(selectSql, sc);
com.Parameters.AddWithValue("@Ename", txtBoxSearch.Text);
try
{
sc.Open();
using (SqlDataReader read = com.ExecuteReader())
{
while (read.Read())
{
textBox1.Text = (read["Ename"].ToString());
textBox2.Text = (read["Sname"].ToString());
textBox4.Text = (read["PositionUpdateBox"].ToString());
textBox5.Text = (read["PerFac1"].ToString());
textBox7.Text = (read["PerFac2"].ToString());
textBox10.Text = (read["PerFac3"].ToString());
textBox11.Text = (read["PerFac4"].ToString());
textBox12.Text = (read["PerFac5"].ToString());
textBox16.Text = (read["PerFac6"].ToString());
textBox17.Text = (read["PerFac7"].ToString());
textBox18.Text = (read["PerFac8"].ToString());
textBox22.Text = (read["PerFac9"].ToString());
textBox24.Text = (read["PerFac10"].ToString());
textBox25.Text = (read["PerFac11"].ToString());
textBox28.Text = (read["PerFac12"].ToString());
textBox30.Text = (read["PerFac13"].ToString());
textBox3.Text = (read["EvalDate"].ToString());
textBox6.Text = (read["Rating1"].ToString());
textBox8.Text = (read["Rating2"].ToString());
textBox13.Text = (read["Rating3"].ToString());
textBox14.Text = (read["Rating4"].ToString());
textBox15.Text = (read["Rating5"].ToString());
textBox19.Text = (read["Rating6"].ToString());
textBox20.Text = (read["Rating7"].ToString());
textBox21.Text = (read["Rating8"].ToString());
textBox23.Text = (read["Rating9"].ToString());
textBox26.Text = (read["Rating10"].ToString());
textBox27.Text = (read["Rating11"].ToString());
textBox29.Text = (read["Rating12"].ToString());
textBox31.Text = (read["Rating13"].ToString());
}
}
}
finally
{
sc.Close();
}
}
private void frmOpenRead_Load(object sender, EventArgs e)
{
// TODO: This line of code loads data into the 'eEDataSetTextBoxes.tbl_TextBoxes' table. You can move, or remove it, as needed.
this.tbl_TextBoxesTableAdapter.Fill(this.eEDataSetTextBoxes.tbl_TextBoxes);
}
private void txtBoxSearch_Enter(object sender, EventArgs e)
{
txtBoxSearch.Text = String.Empty;
}
private void textBox8_TextChanged(object sender, EventArgs e)
{
}
private void label4_Click(object sender, EventArgs e)
{
}
private void startOverButton_Click(object sender, EventArgs e)
{
// START OVER BUTTON CLEARS CONTENT OF ALL TEXT BOXES
textBox1.Text = String.Empty;
textBox2.Text = String.Empty;
textBox4.Text = String.Empty;
textBox5.Text = String.Empty;
textBox7.Text = String.Empty;
textBox10.Text = String.Empty;
textBox11.Text = String.Empty;
textBox12.Text = String.Empty;
textBox16.Text = String.Empty;
textBox17.Text = String.Empty;
textBox18.Text = String.Empty;
textBox22.Text = String.Empty;
textBox24.Text = String.Empty;
textBox25.Text = String.Empty;
textBox28.Text = String.Empty;
textBox30.Text = String.Empty;
textBox3.Text = String.Empty;
textBox6.Text = String.Empty;
textBox8.Text = String.Empty;
textBox13.Text = String.Empty;
textBox14.Text = String.Empty;
textBox15.Text = String.Empty;
textBox19.Text = String.Empty;
textBox20.Text = String.Empty;
textBox21.Text = String.Empty;
textBox23.Text = String.Empty;
textBox26.Text = String.Empty;
textBox27.Text = String.Empty;
textBox29.Text = String.Empty;
textBox31.Text = String.Empty;
}
private void txtBoxSearch_TextChanged(object sender, EventArgs e)
{
}
}
}
這裏有幾個地方做的時候我有什麼到目前爲止，除了在C＃中的一些YouTube視頻瓦特/ SQL我已經看過第一：
https://msdn.microsoft.com/en-us/library/aa984467(v=vs.71).aspx
誰能告訴我在哪裏，我已經錯在這裏，或點我朝着資源或兩個，可以幫助我嗎？
謝謝！
如果您遇到異常，您應該點擊[Copy exception details to clipboard]（https://blogs.msdn.microsoft.com/saraford/2008/08/07/did-you-know-you-可以通過一次點擊從異常助理276 /複製異常詳細信息）並將信息粘貼到此處。如果您不告訴我們您遇到了什麼錯誤，我們無法幫助您。 –
這裏發生錯誤嗎？確保有數據返回。 textBox6.Text =（read [「Rating1」]。ToString（））;例如應該工作，除非查詢結果爲空 –
哪條代碼行拋出錯誤？ – Pushpendra