首页 \ 问答 \ 试图通过aspx更新db，但它没有将所有字段提交给db(Attempting to update db through aspx but it is not committing all fields to db)

试图通过aspx更新db，但它没有将所有字段提交给db(Attempting to update db through aspx but it is not committing all fields to db)

 我目前正在构建一个简单的文章库（或博客，无论首选术语是什么）。 目前我可以更新图像，但我遇到了文本问题。 傻傻的，我知道它应该是一个简单的粗暴操作，但解决方案正在回避我的小脑袋。 图像更新正常，但标题和消息字段似乎没有更新，我不知道为什么。 如果其中任何一个有点模糊，我会道歉但是我最终会对此表示怀疑。 它本来应该很简单，我之前做过无数次，但我现在卡住了，感觉有点傻，所以我觉得是时候打电话给SO专家了:) 
 

 我的aspx： 
 

 <div class="col-sm-10 col-sm-offset-1">
        <asp:Label ID="lblError" runat="server"></asp:Label>

        <asp:FormView ID="frmArticle" runat="server">
            <ItemTemplate>
                <div class="row">
                    <div class="col-sm-12">
                        <asp:TextBox ID="txtTitle" Text='<%# Eval("EntryTitle") %>' runat="server" CssClass="form-control"></asp:TextBox>
        <asp:Image ID="imgOriginal" runat="server" CssClass="img-responsive" ImageUrl='<%# Eval("ImageUrl") %>' />
        <asp:FileUpload ID="flupImg" runat="server" AllowMultiple="true" CssClass="form-control" />
        <asp:TextBox ID="txtMsg" runat="server" CssClass="form-control" TextMode="MultiLine" Rows="25" Text='<%#Eval("Message")%>' ></asp:TextBox>
        <div class="row">
            <div class="col-sm-6">
                <asp:Button ID="btnSubmit" runat="server" Text="Update" CssClass="btn btn-block custBtn" OnClick="btnSubmit_Click" />
            </div>
            <div class="col-sm-6">
                <asp:Button ID="btnCancel" runat="server" Text="Cancel" CssClass="btn btn-block custBtn" OnClick="btnCancel_Click" />
            </div>
        </div>
                    </div>
                </div>
            </ItemTemplate>
        </asp:FormView>


    </div>

 

 我的代码背后： 
 

protected void editPost(string title, string msg)
{
    // Define ADO.NET objects
    SqlConnection con = new SqlConnection(connectionString);
    SqlCommand cmd = new SqlCommand("Blog.ttc_BlogPosts", con);
    cmd.CommandType = CommandType.StoredProcedure;

    // Define parameters for the Stored procedure
    cmd.Parameters.Add(new SqlParameter("@Status", SqlDbType.VarChar, 50));
    cmd.Parameters["@Status"].Value = "UpdatePostMessage";
    cmd.Parameters.Add(new SqlParameter("@Title", SqlDbType.NVarChar, -1));
    cmd.Parameters["@Title"].Value = title;
    cmd.Parameters.Add(new SqlParameter("@Message", SqlDbType.NVarChar, -1));
    cmd.Parameters["@Title"].Value = msg;
    cmd.Parameters.Add(new SqlParameter("@EntryId", SqlDbType.Int));
    cmd.Parameters["@EntryId"].Value = Convert.ToInt32(Request.QueryString["postid"]);

    try
    {
        con.Open(); // Attempt to open the connection to the db
        int i = cmd.ExecuteNonQuery();
    }
    catch (SqlException err)
    {
        lblError.Text = "Image update error" + err.Message;   // Catch exceptions
    }
    finally
    {
        con.Close();    // Close the connection, even if the attempt to open failed.
    }
}
protected void editImg(string imgUrl, string msg, string title)
{
    // Define ADO.NET objects
    SqlConnection con = new SqlConnection(connectionString);
    SqlCommand cmd = new SqlCommand("Blog.ttc_BlogPosts", con);
    cmd.CommandType = CommandType.StoredProcedure;
    SqlDataAdapter adp = new SqlDataAdapter(cmd);
    // Define parameters for the Stored procedure
    cmd.Parameters.Add(new SqlParameter("@Status", SqlDbType.VarChar, 50));
    cmd.Parameters["@Status"].Value = "UpdatePostImage";
    cmd.Parameters.Add(new SqlParameter("@ImgUrl", SqlDbType.NVarChar, -1));
    cmd.Parameters["@ImgUrl"].Value = imgUrl;
    cmd.Parameters.Add(new SqlParameter("@Title", SqlDbType.NVarChar, -1));
    cmd.Parameters["@Title"].Value = title;
    cmd.Parameters.Add(new SqlParameter("@Message", SqlDbType.NVarChar, -1));
    cmd.Parameters["@Title"].Value = msg;        
    cmd.Parameters.Add(new SqlParameter("@EntryId", SqlDbType.Int));
    cmd.Parameters["@EntryId"].Value = Convert.ToInt32(Request.QueryString["postid"]);

    try
    {
        con.Open(); // Attempt to open the connection to the db
        int i = cmd.ExecuteNonQuery();
    }
    catch (SqlException err)
    {
        lblError.Text = "Image update error: " + err.Message;   // Catch exceptions
    }
    finally
    {
        con.Close();    // Close the connection, even if the attempt to open failed.
    }
}

protected void btnSubmit_Click(object sender, EventArgs e)
{
    // Find controls
    TextBox titleFeild = (TextBox)frmArticle.FindControl("txtTitle");
    TextBox msgFeild = (TextBox)frmArticle.FindControl("txtMsg");
    FileUpload fc = (FileUpload)frmArticle.FindControl("flupImg");
    Image postIm = (Image)frmArticle.FindControl("imgOriginal");
    // declare variables
    string aTitle, aMsg;
    // assign values to variables
    aTitle = titleFeild.Text;
    aMsg = msgFeild.Text;

    // call update functions
    if (fc.HasFile == false)
    {
       editPost(aTitle, aMsg);

    }
    else
    {
        string file = fc.PostedFile.FileName;
        // check extension
        string ext = Path.GetExtension(file);
        switch (ext.ToLower())
        {
            case ".png":
            case ".jpg":
            case ".jpeg":
                break;
            default: lblError.Text = "Sorry but this file type is not currently supported.";
                return;
        }
        // Using the following code the file will keep its original name.
        string sfn = Path.GetFileName(fc.PostedFile.FileName);
        string fpath = Path.Combine(upDir, sfn);
        // get name of original file            
        string urlImg = Path.Combine(Request.PhysicalApplicationPath, Server.MapPath(postIm.ImageUrl));
        // delete the original file
        try
        {
            File.Delete(urlImg);
            fc.PostedFile.SaveAs(fpath);
            editImg(@"~/Images/PostImages/" + sfn, aMsg, aTitle);


        }
        catch (IOException ex)
        {
            lblError.Text = "Error  image: " + ex.Message;
        }


    }

}

 

 我的存储过程： 
 

CREATE PROCEDURE [Blog].[ttc_BlogPosts]
@Status varchar(50) = '' ,
@EntryId int = '',
@Title nvarchar(max) = '',
@Added datetime = '',
@Updated datetime = '',
@Message nvarchar(max) = '',
@ImgId int = '',
@ImgUrl nvarchar(max) = ''

AS
BEGIN
IF(@Status = 'Display')
begin
select Id, EntryTitle, Message, ImageUrl, DateAdded, LastEdited
from Blog.BlogEntry
order by DateAdded desc
end

else if(@Status = 'AddPost')
begin

insert into Blog.BlogEntry (EntryTitle, Message, DateAdded, ImageUrl)
values (@Title, @Message, GETDATE(), @ImgUrl)   
end
else if(@Status = 'DisplayPost')
begin
select EntryTitle, DateAdded, LastEdited, Message, ImageUrl
from Blog.BlogEntry
where Id = @EntryId
end
else if(@Status = 'UpdatePost')
begin
update Blog.BlogEntry
set EntryTitle = @Title, Message = @Message, LastEdited = GETDATE()
where Id = @EntryId
end 
else if(@Status = 'UpdatePostImage')
begin
update Blog.BlogEntry
set ImageUrl = @ImgUrl, LastEdited = GETDATE(), EntryTitle = @Title, Message = @Message
where Id = @EntryId
end
else if(@Status = 'DeletePost')
begin
delete from Blog.BlogEntry
where Id = @EntryId 
end


END

 

 你们愿意提供的任何帮助都将非常感激。 如果需要任何进一步的细节，请不要犹豫，给我一个喊叫;） 

I'm currently building a simple article library (or blog, whatever the preferred term is). At the moment I can update the image fine but I am having trouble with the text. Silly I know as it should be a simple crud operation but a solution is evading my tiny mind. The image updates fine but the title and message fields do not seem to be updating and I have no idea why. Apologies if any of this is a little vague but I am at the end of my wits with this. It should have been simple, I have done it countless times before but I am now stuck and left feeling a little silly, so much so I think its time to call in an SO expert :)
 

My aspx:
 

 <div class="col-sm-10 col-sm-offset-1">
        <asp:Label ID="lblError" runat="server"></asp:Label>

        <asp:FormView ID="frmArticle" runat="server">
            <ItemTemplate>
                <div class="row">
                    <div class="col-sm-12">
                        <asp:TextBox ID="txtTitle" Text='<%# Eval("EntryTitle") %>' runat="server" CssClass="form-control"></asp:TextBox>
        <asp:Image ID="imgOriginal" runat="server" CssClass="img-responsive" ImageUrl='<%# Eval("ImageUrl") %>' />
        <asp:FileUpload ID="flupImg" runat="server" AllowMultiple="true" CssClass="form-control" />
        <asp:TextBox ID="txtMsg" runat="server" CssClass="form-control" TextMode="MultiLine" Rows="25" Text='<%#Eval("Message")%>' ></asp:TextBox>
        <div class="row">
            <div class="col-sm-6">
                <asp:Button ID="btnSubmit" runat="server" Text="Update" CssClass="btn btn-block custBtn" OnClick="btnSubmit_Click" />
            </div>
            <div class="col-sm-6">
                <asp:Button ID="btnCancel" runat="server" Text="Cancel" CssClass="btn btn-block custBtn" OnClick="btnCancel_Click" />
            </div>
        </div>
                    </div>
                </div>
            </ItemTemplate>
        </asp:FormView>


    </div>

 

My code behind:
 

protected void editPost(string title, string msg)
{
    // Define ADO.NET objects
    SqlConnection con = new SqlConnection(connectionString);
    SqlCommand cmd = new SqlCommand("Blog.ttc_BlogPosts", con);
    cmd.CommandType = CommandType.StoredProcedure;

    // Define parameters for the Stored procedure
    cmd.Parameters.Add(new SqlParameter("@Status", SqlDbType.VarChar, 50));
    cmd.Parameters["@Status"].Value = "UpdatePostMessage";
    cmd.Parameters.Add(new SqlParameter("@Title", SqlDbType.NVarChar, -1));
    cmd.Parameters["@Title"].Value = title;
    cmd.Parameters.Add(new SqlParameter("@Message", SqlDbType.NVarChar, -1));
    cmd.Parameters["@Title"].Value = msg;
    cmd.Parameters.Add(new SqlParameter("@EntryId", SqlDbType.Int));
    cmd.Parameters["@EntryId"].Value = Convert.ToInt32(Request.QueryString["postid"]);

    try
    {
        con.Open(); // Attempt to open the connection to the db
        int i = cmd.ExecuteNonQuery();
    }
    catch (SqlException err)
    {
        lblError.Text = "Image update error" + err.Message;   // Catch exceptions
    }
    finally
    {
        con.Close();    // Close the connection, even if the attempt to open failed.
    }
}
protected void editImg(string imgUrl, string msg, string title)
{
    // Define ADO.NET objects
    SqlConnection con = new SqlConnection(connectionString);
    SqlCommand cmd = new SqlCommand("Blog.ttc_BlogPosts", con);
    cmd.CommandType = CommandType.StoredProcedure;
    SqlDataAdapter adp = new SqlDataAdapter(cmd);
    // Define parameters for the Stored procedure
    cmd.Parameters.Add(new SqlParameter("@Status", SqlDbType.VarChar, 50));
    cmd.Parameters["@Status"].Value = "UpdatePostImage";
    cmd.Parameters.Add(new SqlParameter("@ImgUrl", SqlDbType.NVarChar, -1));
    cmd.Parameters["@ImgUrl"].Value = imgUrl;
    cmd.Parameters.Add(new SqlParameter("@Title", SqlDbType.NVarChar, -1));
    cmd.Parameters["@Title"].Value = title;
    cmd.Parameters.Add(new SqlParameter("@Message", SqlDbType.NVarChar, -1));
    cmd.Parameters["@Title"].Value = msg;        
    cmd.Parameters.Add(new SqlParameter("@EntryId", SqlDbType.Int));
    cmd.Parameters["@EntryId"].Value = Convert.ToInt32(Request.QueryString["postid"]);

    try
    {
        con.Open(); // Attempt to open the connection to the db
        int i = cmd.ExecuteNonQuery();
    }
    catch (SqlException err)
    {
        lblError.Text = "Image update error: " + err.Message;   // Catch exceptions
    }
    finally
    {
        con.Close();    // Close the connection, even if the attempt to open failed.
    }
}

protected void btnSubmit_Click(object sender, EventArgs e)
{
    // Find controls
    TextBox titleFeild = (TextBox)frmArticle.FindControl("txtTitle");
    TextBox msgFeild = (TextBox)frmArticle.FindControl("txtMsg");
    FileUpload fc = (FileUpload)frmArticle.FindControl("flupImg");
    Image postIm = (Image)frmArticle.FindControl("imgOriginal");
    // declare variables
    string aTitle, aMsg;
    // assign values to variables
    aTitle = titleFeild.Text;
    aMsg = msgFeild.Text;

    // call update functions
    if (fc.HasFile == false)
    {
       editPost(aTitle, aMsg);

    }
    else
    {
        string file = fc.PostedFile.FileName;
        // check extension
        string ext = Path.GetExtension(file);
        switch (ext.ToLower())
        {
            case ".png":
            case ".jpg":
            case ".jpeg":
                break;
            default: lblError.Text = "Sorry but this file type is not currently supported.";
                return;
        }
        // Using the following code the file will keep its original name.
        string sfn = Path.GetFileName(fc.PostedFile.FileName);
        string fpath = Path.Combine(upDir, sfn);
        // get name of original file            
        string urlImg = Path.Combine(Request.PhysicalApplicationPath, Server.MapPath(postIm.ImageUrl));
        // delete the original file
        try
        {
            File.Delete(urlImg);
            fc.PostedFile.SaveAs(fpath);
            editImg(@"~/Images/PostImages/" + sfn, aMsg, aTitle);


        }
        catch (IOException ex)
        {
            lblError.Text = "Error  image: " + ex.Message;
        }


    }

}

 

My stored procedure:
 

CREATE PROCEDURE [Blog].[ttc_BlogPosts]
@Status varchar(50) = '' ,
@EntryId int = '',
@Title nvarchar(max) = '',
@Added datetime = '',
@Updated datetime = '',
@Message nvarchar(max) = '',
@ImgId int = '',
@ImgUrl nvarchar(max) = ''

AS
BEGIN
IF(@Status = 'Display')
begin
select Id, EntryTitle, Message, ImageUrl, DateAdded, LastEdited
from Blog.BlogEntry
order by DateAdded desc
end

else if(@Status = 'AddPost')
begin

insert into Blog.BlogEntry (EntryTitle, Message, DateAdded, ImageUrl)
values (@Title, @Message, GETDATE(), @ImgUrl)   
end
else if(@Status = 'DisplayPost')
begin
select EntryTitle, DateAdded, LastEdited, Message, ImageUrl
from Blog.BlogEntry
where Id = @EntryId
end
else if(@Status = 'UpdatePost')
begin
update Blog.BlogEntry
set EntryTitle = @Title, Message = @Message, LastEdited = GETDATE()
where Id = @EntryId
end 
else if(@Status = 'UpdatePostImage')
begin
update Blog.BlogEntry
set ImageUrl = @ImgUrl, LastEdited = GETDATE(), EntryTitle = @Title, Message = @Message
where Id = @EntryId
end
else if(@Status = 'DeletePost')
begin
delete from Blog.BlogEntry
where Id = @EntryId 
end


END

 

Any help that you guys are willing to offer will be very much appreciated. If any further details are required please do not hesitate to give me a shout ;)

原文：https://stackoverflow.com/questions/32178762
更新时间：2023-09-05 17:09

最满意答案

 以相反的顺序迭代它，只删除不等于当前项目的项目。 
 

var current = 2;

var i = 0;
for (i=itemsAll-1;i>=0;i--) {
    if (i != current) {
        removeItem(i);
    }
}

 

 我可能应该说明反向循环的原因。 Hans评论说，循环是反向完成的，因为'removeItem'可能导致剩余的项目被重新编号。 

Iterate over it in reverse order and only remove the items which does not equal the current item.
 

var current = 2;

var i = 0;
for (i=itemsAll-1;i>=0;i--) {
    if (i != current) {
        removeItem(i);
    }
}

 

I probably should have stated the reason for the reverse loop. As Hans commented, the loop is done in reverse because the 'removeItem' may cause the remaining items to be renumbered.

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