Question

I am using asp.net and jQuery 1.6

In my function I am required to pass html tags as a data parameter to my server side method written in C#. In my Database the column has Blob datatype.
I am able to submit data successfully upto 528b but If I submit large data… I’m not able to send at server side.

When I pass small data it works and a row inserted. But If I pass data around 17Kb then this doesn’t go to the sever side, but prompt me an undefined error in jquery.

Following is Ajax Code:

$.ajax({
    type: "POST",
    url: "Post.aspx/savePost",
    data: "{Title:'" + Title + "',Html:'" + Html + "'}",
    contentType: "application/json",
    dataType: "json",
    success: function (data) {
        if (data == undefined) {
            alert("Error : 219");
        }
        else {
            alert(data.d);
        }
    },
    error: function (data) {
        if (data == undefined) {
            alert("Error : 465");
        }
        else {
            alert("Error : 468 " + data.d);
        }
    }
});

Following is C# code

[System.Web.Services.WebMethod]
public static string savePost(string Title,string Html)
{
    string retMsg = "Not Saved";
    Post bp = new Post();
    int count = 0;
    count = bp.mySavePost(Title,Html);
    if (count > 0)
    {
        retMsg = "Post Save Successfully.";
    }
    return retMsg;
}

protected int mySavePost(string Title, string Html)
{
    int count=0;
    try
    {
        string rawQuery = "INSERT INTO temp_posts (Title,HTML)"
                        + " VALUES(?Title,?HTML)";
        cmd = new MySqlCommand();
        cmd.CommandText = rawQuery;
        cmd.CommandType = System.Data.CommandType.Text;
        cmd.Parameters.Add("?Title", MySqlDbType.VarChar).Value = Title;
        cmd.Parameters.Add("?Html", MySqlDbType.Blob).Value = Html;
        count = c.insertData(cmd);
     }
     catch(Exception ex){}
 }

Please guide me with you valuable knowledge.
Thanks.

Answer 1

Many Thanks to everyone who put his best effort for this thread.

Finally with the help of one my senior I found where I was lacking in my code.

As I am passing html tags as a data parameter to my server side method written in C# from jQuery.ajax(); I need to encode the data.

As I used the escape() function in javascript to encode it worked. Data is submitted to database.

var encodedHTML = escape(Html);         //here encoding Html.
$.ajax({  
    type: "POST",   
    url: "Post.aspx/savePost",  
    data: "{Title:'" + Title + "',Html:'" + encodedHTML + "'}",  
    contentType: "application/json",  
    dataType: "json",  
    success: function (data) {  
        if (data == undefined) {  
            alert("Error : 219");  
        }  
        else {  
            alert(data.d);  
        }  
    },  
    error: function (data) {  
        if (data == undefined) {  
            alert("Error : 465");  
        }  
        else {  
            alert("Error : 468 " + data.d);  
        }  
    }  
});  

Thanks everyone 🙂