[英]Updating a Image field in SQL server
I am trying to update mu existing image field in one of my table and I am getting error saying "A generic error occurred in GDI+". 我正在尝试更新我的一个表中的mu现有图像字段,我收到错误说“GDI +中发生了一般错误”。 Please help.
请帮忙。
private void Add_Records()
{
int i = check_for_null();
if (i == 1)
{
DateTime Nw = DateTime.Now;
int user = Form_Common_Login.user_id;
int ref_lc = 0;
ref_lc = Convert.ToInt16(cbo_emp_cat.SelectedValue);
try
{
string query = @"INSERT INTO tbl_Labour_Employee_Reg
(Ref_IDLC,First_Name,Last_Name,Emp_Image,Designation,NIC_No,Emp_Address,Previous_WorkPlaces,Phone_Number_Mobile,Phone_Number_Residential,Account_Number,Employee_Number,Remarks,Accessed_By,Accessed_Time,Is_Deleted,Is_Active)
VALUES ('" + ref_lc + "','" + txt_Fname.Text + "','" + txt_Lname.Text + "',@image_array,'" + txt_designation.Text + "','" + txt_nic.Text + "','" + txt_address.Text + "','" + txt_previous_wp.Text + "','" + txt_Mnumber.Text + "','" + txt_Lnumber.Text + "','" + txt_account_number.Text + "','" + txt_emp_number.Text + "','" + txt_remarks.Text + "','" + user + "','" + Nw + "',0,1)";
clz_Common_SqlConnection con = new clz_Common_SqlConnection();
SqlCommand cmd = new SqlCommand(query ,con.ActiveCon ());
MemoryStream ms = new MemoryStream ();
pic_box_employee.Image.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);
byte[] image_array = ms.ToArray();
cmd.Parameters.AddWithValue("@image_array", image_array);
cmd.ExecuteNonQuery();
MessageBox.Show("Successfully Saved");
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
else { MessageBox.Show("Please enter Valid Data"); }
}
my update code here 我的更新代码在这里
private void Update_Records()
{
int i = check_for_null();
if (i == 1)
{
DateTime Nw = DateTime.Now;
int user = Form_Common_Login.user_id;
int ref_lc = 0;
ref_lc = Convert.ToInt16(cbo_emp_cat.SelectedValue);
try
{
string update_query = "UPDATE tbl_Labour_Employee_Reg"+
"SET Ref_IDLC ='"+ref_lc+"',First_Name = ,'" + txt_Fname.Text + "',Last_Name='" + txt_Lname.Text + "',Emp_Image = @image_array,Designation = '" + txt_designation.Text + "',NIC_No='" + txt_nic.Text + "',Emp_Address = '" + txt_address.Text + "'"+
",Previous_WorkPlaces = '" + txt_previous_wp.Text + "', Phone_Number_Mobile = '" + txt_Mnumber.Text + "',Phone_Number_Residential='" + txt_Lnumber.Text + "', Account_Number= '" + txt_account_number.Text + "',Employee_Number='" + txt_emp_number.Text + "'"+
",Remarks='" + txt_remarks.Text + "',Accessed_By='" + user + "',Accessed_Time= '" + Nw + "',Is_Deleted=0,Is_Active=1";
clz_Common_SqlConnection con = new clz_Common_SqlConnection();
SqlCommand cmd = new SqlCommand(update_query, con.ActiveCon());
MemoryStream ms = new MemoryStream();
pic_box_employee.Image.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);
byte[] image_array = ms.ToArray();
cmd.Parameters.AddWithValue("@image_array", image_array);
cmd.ExecuteNonQuery();
MessageBox.Show("Successfully Updated");
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
else { MessageBox.Show("Please enter Valid Data"); }
}
Insert function is properly working but the update is not. 插入功能正常工作但更新不正常。 I am really struck in here.
我真的很震惊。 If you have better way to insert & update a image field please explain.
如果您有更好的方法来插入和更新图像字段,请解释。
First of all move your answer to your question. 首先,回答你的问题。 Its not an answer.
这不是答案。 Its just a new question.
这只是一个新问题。
try using the following, I personally update images as follows; 尝试使用以下内容,我个人更新图片如下;
Image img = Image.FromFile(@"C:\Users\Awais\Desktop\image.png");
byte[] arr;
using (MemoryStream ms = new MemoryStream())
{
img.Save(ms, System.Drawing.Imaging.ImageFormat.Png);
arr = ms.ToArray();
}
int dr = 0;
SqlConnection con = new SqlConnection("data source=.; initial catalog=database; uid=sa;pwd=password;");
SqlCommand cmd = new SqlCommand("update table set I1 = @img", con);
cmd.Parameters.AddWithValue("@img", arr);
con.Open();
using (con)
{
dr = cmd.ExecuteNonQuery();
}
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